C H E M IS T R YComplete, practical home-study

courneft i>rrp tired by some of the bc»t-known chemists in this

co u n try , includ ing Ai.i.en R o g e r s , B.S., M.S.. Ph.D.— H ead o f

Department of In- ' dustrial Chemistry,I Pratt Institute; L. [M . T o l m a n , Ph.D.,

V ic e -p re s id e n t,I U n ite d C hem ical and Organic Prod­u c ts Co.; B r ad ley St o u g h t o n , B .S .— Head of th e D e-

Eartment of Metallurgy, Lehigh University, and w in S t i i s s , Ph.D . — Professor of Applied

ChemUlry, Inlvm ily of Pennsylvania.M ail C oupon fo r F ree B o o k l t t

IN T I HNATtO NAL SCHOOL OF CH EM ISTRY ~~l

I Division of th eIn ternational Correspondence Schools

( Box 7634-G , Scranton. Penna.\V |tlim it cost or obligation, please send me fu ll I ilolnlli* of your hom e-study course InAnnlytlcal Chem istry □ M etallurgical Chem istry I Chemical Engineering Q Short Chem istry Course I In d u stria l Chem istry □ Pharmacy

.lo t

I O ' • P !I □ iN ii me

MIND POWER,

A FREE BO O KD e v e lo p y o u r p e rs o n a l , c r e a t i v e p o w e r ! A w a k e n \

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h e lp y o u a p p ly th e g r e a t e s t o f a ll p o w e rs in m a n 's ’ c o n t r o l. C r e a t e h e a lth a n d a b u n d a n c e fo r y o u r s e l f . 1

W r i t e fo r F R E E b o o k , " T h e W is d o rn o f th e S a g e s '* . It \ ♦ells h o w y o u m a y r e c e iv e th e s e te a c h in g s fo r s tu d y a n d ’

u se . I t m e a n s th e d ^ w n o f a n e w d a y fo r y o u . A d d r e s s . '

Scribe P .C .T .

R O S t C R U C IA N B R O T H E R H O O DS a n Jose ( A M O R C ) C a l i f o r n ia

We Want Inventionsor practical ideas that might be developed into pat­ented products. If you have an invention, either patented or unpatented, or an idea for sale, don't delay communicating fully with us, in strict confi­dence.Suite 1027-S, 2014 E. 9th St., Cleveland, Ohio

P r in t Y ou r O w nC ard s, S ta tio n e ry , A dvertising ,

labels, p a p e r, c ircu la rs , ta a s , e tc . Save m oney and tim e. Sold d irec t from fac to ry only. J u n io r P r e s s S S . 9 0 , Job P re s s ,H I , P ow er $1-19. Do po p u lar ra ised p r in tin g like en- g rav in g w ith a n y o f o u r p resses.

P r in t fo r O th e r s , B ig P ro f it s . P ays f o r i t s e lf in a sh o r t tim e. E asy ru le s s e n t. W rite fo r fre e ca ta lo g o f o u tfits an d a ll de ta ils . The Kelsey Co., H-33. Meriden, Conn.

Inventions WantedPatented or Unpatented

Our manufacturer-clients now want additional improved inventions. What have you?C hartered In s titu te o f A m erican Inven to rs565 B a r r i s te r B u ild ing W a sh in g to n , D. C.

" W o rld 's L a rg est O rgan iza tion o f In ve n to rs '*

Electrical EngineeringN e w o p p o r tu n i tie s co nstan tly - o p e n in g to m en p roperly tra in ed . K le rir lc a l E n g in e erin g Is s till o n e ot th e b iggest, lIvcHt. f.iMirsi. (trow ing fields. P ra c tica l tra in in g , larg e ly of rollegu .s tan d a rd , g iv en b y borne s tu d y . T e x ts w ritte n b y 2S :iulhorltlcH front C e n e ra l Klee trie , W estia g h o u se , M as*. In s t, of T ech n o lo g y , i,c liieh . e tc .: u sed b y re s id e n t col­leges. t ra d e schools. IT. .S. N a v y . e tc . School c h a rte re d 35 y ea rs nuo a s e d u c a tio n a l In s titu tio n , n o t fo r p ro fit, like best resM en t voIU'k w , um l :«> e x e m p t from ff. ,S. ineoine tax . W rite fo r B u lle tin , l is t o f lo ca l s tu d e n ts a n d g rad u a te s .American School, Dpt. E - 1 4 8 , Drexel at 58 St., Chicago

G IV E T H E G IF T T H A T ’S A L W A Y S W E L C O M E

M ake it a H appy C hris tm as w ith P o p u la r Science M onthly . Special ra te s th is y e a r for re ad ers. See inside of back cover.

PICKED MEN TRAINED TO LEAD SEA POLICE

('Continued from page 39 )

dope smuggler is also active. Armed w ith smoke screens, machine guns, super-powered boats, and even poison gas, these outlaws are playing a fierce bu t losing game w ith the law.

Against these smugglers, the little sailing cutters of the old days have given w ay to a fleet of several hundred sw ift picket boats, sturdy steel cutters w ith turbo-electric drive, sixteen powerful destroyers. Seven brand- new, 165-foot Diesel-powered patrol boats were recently added to this service in the vicinity of N ew York. An ever-tightening cordon is being draw n around our 10,000 miles of coast.

Capture of the rum -runner is only one of m any duties of the Coast Guard. M ore than 300 wrecks, derelicts, and other dangers to navigation are destroyed each year by ramming, gunfire, or Explosives. Laws re­lating to navigation, quarantine, and neu­trality m ust be enforced. Medical aid is rendered to vessels engaged in deep-sea fish­ing. Regattas and marine parades are pa­trolled. Protection is given to seal herds, game, and salmon' fisheries in Alaska. M edi­cal a ttention , police protection, provisions, and legal services are carried to isolated villagers of the fa r north.

SIN C E the fateful night in April, 1912, when the Titanic ramm ed an iceberg off

the G rand Banks and sank w ith the loss of 1,500 lives, two cutters have been detailed each spring to patro l the danger region, noting the size, position, and drift of icebergs floating near the shipping lanes, and broadcasting the inform ation to passing vessels. From 1,500 to 2,000 ships, $ 10,000,000,000 in property, and 1 ,000,000 lives pass through this zone each season. Due to its watchfulness, not a single ship has been lost by collision w ith an iceberg since the patro l has been in operation.

M ost im portant of all the duties of the Coast Guard, however, and the one pursued a t the expense of all the others when oc­casion demands, is the rescue of lives and ships. To this end, every officer m ust be a hero as well as expert seaman. From De­cember to M arch, the most hazardous m onths of the year, cutters of the service continuously plow through the danger areas, alert for the call of a disabled ship. M ore than 250 active land stations, w ith launches and surf boats ready to push into the waves, keep watch from the shore.

During the fiscal year ending in 1931, the officers, cutler crews, and surfm en assisted vessels and cargoes w orth $47,959,465, and saved 5,627 lives. During the last eighteen years, the value of property saved is more than $600,000,000 and more than 50,000 persons were rescued.

ON TW O recent trips to New London I saw the buildings of this institution,

talked with the members of the faculty, and saw the cadets hard a t work. Of Colonial design, faced with brick and limestone, the buildings have been adapted to the configur­ation of the land. In the front row, facing aw ay from the river, are the classroom and adm inistration buildings and the cadet b a r­racks. Behind these, lower 011 the slope, are the machinery building and the enlisted m en’s quarters. The combined arm ory and gym ­nasium, and the athletic field overlook the river and w harf.

Captain Randolph Ridgely, Jr., is the first superintendent of the new Academy, coming to the position from the command of the New York Division of the Coast Guard. Captain Ridgely served in the W orld W ar, in the subm arine zone.

C aptain Q. B. Newman, for m any years Enginccr-in-Chief (C ontinued on page 93)

STU D Y AT HOM ILegally trained mon win hl«ji positions and biff eucce89 in buaj*

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fuT graduates in every section of the United StaUi, Wo furnish all te x t m aterial, including fourteen-volum e Law Libr»rj. Low cost, easy term s. G et our vafuabfe 64-pa*e "L aw G uide" *04 "E v id en ce " books FREE. Send for them NOW.L a S a l l e E x t e n s i o n U n iv e r s i t y , D e p t . 1 8 3 - L C h l c a f f

T h e W orld 's La rg e st B u s in e ss Tra in ing in stitu tio n

Managers InventorsA personal confidential and efficient service. Without obligations nrite and state your difficulties. Scientific«r advice in technical-mechanical problems. Designing nitil Drafting of Plants, Machines, Apparatus. Have yogr drawings checked before you build. Calculations Patent sales. 15 years of experience.Carl A. T. Graf. Consulting M echanical EnginMf

' t. OhW3237-A Grove Avenue Lorain.

IN V E N T O R S i p ffacts before applying for Patents. Our hook Pat ent S t m gives those facts; sent free. Write L A C E Y & L A C t i 635 F S t..N .W .D e p t. 10, W ashington. D.C. Established 11)1

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D A Y . Not s e n t to boys u n d er 1 7 y e a rs of ag e .T. C. Coale, Book Dept 13-61 1920 Sonny siife Ave.. Chicago, IH J

Book on PATENT“ P r a c t ic a l P a t e n t L a w ” , 420- ■ J | S M Ipage book, s a v e s i n v e s t o r s ■ I n im oney and tim e. Show s w ha t is W V lp a ten tab le , how to p ro tec t y o u r Jp a te n ts , re la tio n to p r io r p a te n ts , possib ilities o f infrinM m ent. W ritte n so you can u n d ers tan d by noted p a te n t autlMg ity . Save co st m any tim oe. Send only $4.50, volum e shlpM on 6 davs approval, i f no t sa tisfied , m oney w ill be refund

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H ere is the very course you need if you want to get a good paying position as a Show Card Letterer or Sign Letlercr, or have a business o f your own. This course is complete and prac­tical and especially arranged to meet the needs of the student who studies a t home. I t was written by E. L. Koller, Principal of the In ter­national School of Art, member of the American Federation of Arts, and T he National Society of Craftsmen.

H. L. Wood, a clerk, made more than $700 “ on the side” before he had completed this course and also won §125 in prizes. Harry Lord writes th a t he has more than doubled his salary as a result of studying in spare time. William W hitman, a former wagon builder, now has a sign painting business of his own and is earning th r e e t i m e s as much as he did before enrolling with the International School of Art'.

M a il C oupon fo r F ree B o o k le t

IN TER N A TIO N A L SCHOOL OF ART Associated with the

► International Correspondence Schools► Dept. 7645-G, Scranton, Penna.► W ithou t cost or obligation, p lease send me fu ll ^ d e ta ils of your hom e-study course in► □ Show Card Lettering► □ Illustra ting □ Cartooning

► N am e................................................................................................ ^

RLEA R N - T " ,N L O S A N G E L E S

a d i o - l e l e v i s i o nT A L K I N G P IC T U R E S & E L E C T R IC IT Y

In ju s ta fe w y e a rs . Radio has become one of the w orld 's leading indus­tries . Talking pictures have brought new life aud opportunity to the Movies. Now. TeJevisJoj} ish e re w ithaprom ise o f grow th atm) ac tiv ity so g re a t i tcan n o th e estim ated . Come to Los Angeles and I earn these fasci­nating Trades. Times < is over. Thousands < nates in demand.S pec ia l New C o u rse -R ad io B ro a d c a s t T ec h n ic ian

i to students w hoenroll Immediately. We broadcast over o u r own i learn to operate all kinds of latest equipm ent.

E A R N Room an d B o ard75$ of our s tudents are earning their living expenses while attend ing school now. We help you get a job. If you are short of money w rite and explain your problem . We also allow your Coach Railroad Fare to Los A ngeles. Send for Free Book

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W r i t e fo r F R E E b o o k , " T h e W is d o m o f th e S a g e s " . I t \ te lls h o w y o u m a y r e c e iv e th e s e te a c h in g s fo r s tu d y a n d ’

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R O S IC R U C IA N B R O T H E R H O O DS a n J o s e ( A M O R C ) C a l i f o r n ia

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SUCCESS/' 'D O N ’ T C O P Y - L E A R N T O O R I G I N A T E !

RAVE BURNS will teach you HOW to CREATE ORIGINAL CARTOONS at home that you can<SELL! Course has 26 lessons and 600 illustrations.

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M ak e m o n ey ta k in g p ic tu re s . P re p a re q u ick ly d u rin g sp a re tim e . A lso e a rn w hile you lea rn . N o ex p erien ce n e c essa ry . New ea sy m ethod . N o th in g e lse lik e i t . Send a t once for free book. O p p o r tu n it ie s in M o d ern P h o to g r a p h y . and fu ll p a rt ic u la rs .

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Secre t s o f Success

BECAME A SUCCESSFUL RADIO MARINE OPERATOR

( C o n tin u ed fro m page 9 7 )

tion , I w as engaged and sen t o u t as a R adio O p e ra to r on a passenger vessel sail­ing fo r th e W est Ind ies . Since th a t first job , w hich seem ed like a little glim pse of heaven to m e, I have sailed all over the w orld, touch ing p o rts I never d ream ed ex­isted . T o say th ere is no com parison be ­tw een th is w ork and the w ork I did before tak in g up the school course is to m ake an u n d e r-s ta tem e n t!

I now have a p ro fession th a t I can be and am p ro u d of, and m y w ork is steady , y e a r in and y e a r ou t. N o t only is th e p a y ' good, b u t all m y trave lling and living expenses on d u ty are pa id for. T h e re ’s no such th ing a s a dull m om ent in th is w ork , and I h ave th a t feeling of sa tis fac tio n a b o u t m y jo b th a t m akes i t th e biggest success a m an can w ant.

T o the m an w ith no special tra in in g , and w ith a han k erin g fo r som eth ing b e t­te r in life, I ’d say th a t th is is th e tim e to tak e a n o th e r look a t th a t ad v ertise ­m en t he has seen from tim e to tim e. I suggest w ritin g fo r p a rticu la rs an d sh ap ­ing a course fo r im prov ing his fu tu re career. W hen these dull tim es are over, th e d em and fo r w ell-trained m en in every line w ill be g re a te r th an ever. T ak e a d ­v an tag e o f th e lull now and be p repared fo r th e boom th a t w ill com e la te r. As fo r rad io , to m e its o p p o rtu n ities seem ed lim itless. As it has been u p till now , w ith th e tra in ed m en ge ttin g th e best breaks, it will co n tin u e to be in th e new fields th a t will be opened in th e fu tu re .— H . R . W allin , B rook lyn , N . Y .

Cash PrizesTH I S d e p a r tm e n t w ill g iv e $5.00 f o r

e v e ry t r u e su c c e s s s to r y s u b m itte d b y r e a d e r s o f P o p u la r S c ie n c e M o n th ly , a n d w h ic h is a c c e p te d fo r p r in t in g in th is m a g a z in e .

M a n u s c r ip ts w ill b e ju d g e d o n th e in d iv id u a l m e r i t s o f th e c a se an d c i r ­c u m s ta n c e s in v o lv e d . O n ly s to r i e s in w h ic h th e a u th o r ’s su c c e ss , o r th a t o f so m e o n e k n o w n to th e a u th o r , h a s b e en g a in e d by so m e m e th o d o f e d u c a tio n a l g u id a n c e , f i tn e ss f o r th e jo b , o r a p p li ­c a t io n to th e w o rk w ill be c o n s id e re d . W e a re n o t lo o k in g f o r th e “ g e t- r ic h - q u ic k ” ty p e o f s to ry .

M a n u s c r ip ts m u s t be c o n fin ed to 500 w o rd s o r le s s . T h e y m u s t be t r u e and , i f a c c e p te d , a u th o r s m u s t b e p re p a re d to g iv e u s s ig n e d s ta te m e n ts to th e e f ­f e c t t h a t th e y a re t ru e . M a n u s c r ip ts s u b m it te d a n d p r in te d b e c o m e th e p r o p e r ty o f th is m a g a z in e , an d w e a re n o t r e s p o n s ib le f o r th e r e tu r n o f r e ­j e c te d s to r i e s u n le s s p o s ta g e is p r o ­v id e d f o r th is p u rp o se . A d d re s s ''con­t r ib u t io n s to S u c c e s s S to r y D e p a r t ­m e n t, P o p u la r S c ie n c e M o n th ly , 381 4 th A v e n u e , N e w Y o rk C ity .

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IT ’S E A S Y TO M A KE B IG S P A R E T IM E M ONEY

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I n s m a l l s p a c e , you ca n increase your Income a n d decrease your household expenses, by ra ising poultry. A ll over the country thousands of people are helping meet modern income problems by th is profitable, in te res tin g business. No previous experience required. A few m inutes n igh t and m orning— th a t 's a ll the work necessary. The In te rn atio n al Correspondence Schools P oultry F arm ing Course w ill successfully estab lish you in th is business on a step -by-step basis. I t w ill teach you the secrets of deriving a steady income from your own backyard. Send the coupon for free booklet.

IN TER N A TIO N A L C O RRESPO N D EN CE SCHOOLS

Box 7649-G , Scranton, Penna.W ithout cost or obligation, please send me com­

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Xante.....

A d d ress .

RLEA R N - p W L O S A N G E L E S

a d i o 'l e l e v i s i o nT A L K IN G P IC T U R E S & E L E C T R IC IT Y

In ju s ta few years. Radio has become one of the w orld’s leading indus­tries. Talking pictures have brought new life and opportunity to the Movies. Now. Televisionishere w lthaprom ise of grow th and activity so groat itcannot bo estim ated, ('om c to Los A ngeles and I earn these fasci­nating T rades. Times art* getting better. The w orst o f the depression is over. Thousands of new jobs call for trained men. National Grad­uates in demand.S pecia l New C o u rse -R ad io B ro a d c a s t T e c h n ic ianGiven to s tudents who enrol 1 immediately. We broadcast over o u t own station. You learn to operate all kinds of la tes t equipm ent.

E A R N R oom and B o ard75'} of our students are earning their living expenses while attending school now. We help yon get a job. If you are short of money, writeand explain your problem. We also allow your Coach Railroad ra re toLos Angeles. Send for Free Book

r~N ATIO N A L RADIO & E L E C T R IC A L SC H O O L,■ Dept. P S R -6 , 4 0 0 6 So . F igueroa S t . , Los A n geles, Ca lif. .I Pleaficgend m eyourbig Free Book onTelevision, Talking P ic tures, |■ Radio and E lectricity . Also details of R. R. fare offer.| N am e.......................................................... . ........................................ *... *I A d d ress ................................., ................. II C ity ..........................................................................S tate —

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a ll o b s ta c le s w ith a n e w e n e r g y y o u h a v e o v e r - ' lo o k e d . T h e R O S 1 C R U C IA N S kno w h o w , a n d w ill 1

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W r i t e fo r F R E E b o o k , " T h e W is d o m o f th e S a g e s " . It \ te lls h o w y o u m a y r e c e iv e th e s e te a c h in g s fo r s tu d y a n d '

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Scribe F . N. W .

R O S IC R U C IA N B R O T H E R H O O DS a n J o s e ( A M O R C J C a l i f o r n ia

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S ecre t s o f Success

THIS FARMER IS MAKING MONEY IN HARD TIMES

(C o n tin u e d fro m page 8 9 )

w ould be m uch to learn . W e w ro te to th e D e p a rtm e n t of A gricu ltu re, a t W ash ing­to n , and to the S ta te College. In reply , we received a n u m b er of booklets on b u tch erin g and curing m eats. A fte r weeks o f read ing and stu d y , we w ere read y for o u r first ex p erim en t— pork. W e found th a t h and ling and selling one hog took exactly one week. T h is d id n ’t seem very fa s t fo r th e am o u n t of w ork p u t in to the job . B u t we w ere v e ry carefu l ab o u t be ­ing clean, and ou r trad e increased slowly. Sausage w as o u r specia lty , and th e re s ta u ­ran ts in tow n began buying it in in c reas­ing q u an titie s .

T h is y e a r we began to sell som e beef, and found it offered a g rea t deal m ore w ork th a n selling pork . T h ere was m uch m ore of i t to d ispose of in sm all am oun ts. O ur m ea t was ten d e r and fresh , and we handled and w rapped it w ith every p re ­cau tion . N o w we have a fa ir tra d e am ong eating houses and tea room s. W e have ju s t fin ished o u r last bu tch erin g jo b th is week, as it will soon be w arm w eather, and we in ten d to raise p o ta to es and o th er tru c k to sell th is Spring and S um m er to ou r sam e trad e . T h is will assu re u s of a reasonab le am o u n t of business.

I t m eans, as you can see, a g rea t deal of w ork. I ts rew ard is in keeping us going till p rices s ta r t to rise. W e d o n ’t call it financial success, but it has been the m eans o f securing for us a sm all and fa irly s tead y incom e, w here before we had the p ro sp ec t of looking fo rw ard to no th ing a t all.— J. I . E ., Tiffin, Iow a.

Cash PrizesTH I S d e p a r tm e n t w ill g iv e $5.00 fo r

e v e ry t r u e su c c e s s s to r y s u b m itte d b y r e a d e r s o f P o p u la r S c ie n c e M o n th ly , an d w h ic h is a c c e p te d f o r p r in t in g in th is m a g a z in e .

M a n u s c r ip ts w ill b e ju d g e d o n th e in d iv id u a l m e r i t s o f th e c a se a n d c i r ­c u m s ta n c e s in v o lv e d . O n ly s to r i e s in w h ic h th e a u th o r ’s su c c e s s , o r th a t o f so m e o n e k n o w n to th e a u th o r , h a s b e e n g a in e d b y so m e m e th o d o f e d u c a tio n a l g u id a n c e , f i tn e s s f o r th e jo b , o r a p p l i ­c a t io n to th e w o rk w il l b e c o n s id e re d . W e a re n o t lo o k in g f o r th e “ g e t- r ic h - q u ic k ” ty p e o f s to ry .

M a n u s c r ip ts m u s t b e c o n fin e d to 500 w o rd s o r le s s . T h e y m u s t b e t r u e a n d , i f a c c e p te d , a u th o r s m u s t b e p re p a r e d to g iv e u s s ig n e d s ta te m e n ts to th e e f ­f e c t t h a t th e y a re t ru e . M a n u s c r ip ts s u b m it te d a n d p r in te d b e c o m e th e p r o p e r ty o f th is m a g a z in e , a n d w e a re n o t r e s p o n s ib le f o r th e r e tu r n o f r e ­j e c te d s to r i e s u n le s s p o s ta g e is p r o ­v id e d f o r th is p u rp o se . A d d re s s c o n ­t r ib u t io n s to S u c c e s s S to r y D e p a r t ­m e n t, P o p u la r S c ie n c e M o n th ly , 381 4 th A v e n u e , N e w Y o rk C ity .

M e a s u r e y o u r p r o f i t s w i th

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in 10 Weeks^ ~ ~ e A r TUITION

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The Vest Pocket CushingAn A. B C. G u id e to P a r l i a m e n ta r y Law I *•• • ♦ on tlic h ig h e s t a u th o r i t i e s a n d a d a p te d in ui'in i'il u se c o n ta in in g m odel sp e e c h e s a n d I• • >a ll o c c a s io n s . 128 p a g e s , s iz e 2 14 ,\ I 1 1 In• li• • l e a th e r e t te ........................................ P rice >1 IHl

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M a k e m o n e y t a k i n g p i c tu r e s . P r e p a r e q u ic k ly clm linj s p a r e t im e . A lso e a r n w h i le y o u le a rn . N o e x p c r lo m . n e c e s s a r y . N e w e a s y m e th o d . N o th in ? : e ls e l ik e l| S e n d a t o n c e fo r f r e e b o o k , O p p o r t u n i t i e s in >iP h o t o g r a p h y . a n d fu ll p a r t i c u la r s .

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(C ontinued from page u )

A 7-REE BOOKD e v e lo p yo u r p t i v e p o w o rt A w a U n \

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Scribe J . L. X.

R O S IC R U C IA N B R O T H E R H O O DS#« J### (AMORC) Ctlifornia

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Inventions WantedPatented or Unpatented

M anufacturers now showing increased inter e>t in sound inventions. What have you?

C hartered Institu te o f A m erican Inven to rs539 B a r r i s t e r B u ild in g W a s h in g to n . D . C .

“ W o r ld 's L a r g e s t O r g a n iz a t io n o f In v e n to r s * '

Superchargers, driving a blast of air into the carburetor to make up for the reduced pressure in rarefied atmospheres, help these gasoline motors. They are heavy, however, adding to the weight of the plane, and they never completely prevent loss of power at high_altitudes.

Now consider the steam engine. It loses no power a t all w ith altitude and gains in effi­ciency the higher it goes! This is bccause the pressure on the exhaust is less in th in air than a t sea level. Thus the perfection of the flying steam engine is a vital step tow ard conquering the stratosphere.

Realizing these facts, inventors in various parts of the world have been working tow ard the goal achieved by the Besler brothers. In Akron, Ohio, last fall, a local inventor, Harold C. Johnson, announced the completion of a steam engine w ith tw o opposed cylinders, weighing, complete w ith boiler, only 146 pounds.

Some m onths earlier, it became known th at the Great Lakes A ircraft Company, a t Cleve­land, Ohio, was working upon an experimental steam -driven biplane. Recent dispatches from France reported th a t a Paris mechanic had perfected a light steam power p lant for a ir­planes. A nother news item, coming from Sweden, told of steam -turbine engineers who are working on a new-type turbine for a ir­craft use, while a third, from Italy , carried the inform ation th a t G. A. Raffaelli, an aeronauti­cal engineer, had announced a steam engine for stratosphere machines.

B ut it was the tw o California inventors, carrying on their secret researches, who first achieved the long-sought goal of steam -driven flight.

Ever since Henri Giffard, in 1852, navigated the air in the w orld’s first dirigible, creeping along near the outskirts of Paris a t seven miles

an hour propelled by a clumsy three-horsi power steam engine weighing 462 pounds, tbci have been proponents of steam power for air* craft.

Many of the pioneers of flight, before thl perfection of the gas engine, sought to fly b steam. In 1804, Sir Hiram Maxim, the Engliil inventor, spent $ 200,000 building a giganttf multiplane weighing 8,000 pounds and havinj a wing area of almost 4,000 square feet. Driven by a 363 horsepower steam engine and tW( eighteen-foot propellers, the giant craft reachw thirty-six miles an hour on special tracks bull! to hold it down during the prelim inary testli Its lift a t this speed was so great th a t it tor*' loose from the tracks, crashed over on one sidfj and demolished itself.

Two years later, Samuel Pierpont Langley, secretary of Smithsonian Institu tion , Wash! ington, I). C., saw his sixteen-foot model ity for half a mile above the Potom ac River proi pelled by a m iniature, seven-pound steam en« gine, developing one and one-half horsepower, The full-sized tandem m onoplane which Lang« ley patterned after this model in 1903 am which was broken in launching, carried a gaso« line m otor instead of a steam power plant

After 1903 and the success of the Wright Brothers, steam power for aircraft was prac* tically lost sight of. Gasoline engines madl such rapid advance in lightness and reliability that they came into universal use in aviation* Recently, however, the advantages of steam; power have again been attracting an increasing am ount of attention.

With the first experimental machine already climbing into the air a t Oakland, steam has, ill last, been harnessed to work in the sky. Ex<i perts arc watching the progress of the invent* ors with the keenest interest. Their machine a definite step towrard the huge, winged steamy ers of the sky visioned by pioneers of flighl

AUTO GLASS THAT'S CRASH-PROOF(C ontinued from page 56 )

“W hat’s the secret of the stuff?” inquired Kennedy .as he examined the cracked sur­face of the safe glass.

“ I t ’s no secret,” replied Gus. “Safe glass is made of two polished pieces of plate glass cemented to a center sheet of transparent plastic m aterial like celluloid. This center sheet is tough yet pliable and holds the outer and inner glass in place when it cracks.

" H P H IS black edging,” Gus continued, “is a w aterproof cement th at seals over

the edge of the plastic filler. After the two sheets of plate glass and the center sheet are bonded together under pressure and heat, the sheet of safety glass is dipped in acid. The acid eats away the plastic filler and forms a shallow groove around the sheet. W hen cement is forced in this groove, the plastic center is sealed in airtight. Moisture and air can’t get at it.”

Joe Clark, standing in the garage door­way, listened intently as his partner ex­plained the process. “Do you know how they discovered the stuff?” he called when Gus had finished.

“About th irty years ago some French scientist was using a sort of liquid celluloid in his work. One day he forgot to cork the bottle. Of course, the liquid evaporated and left a th in layer of celluloid, or something like it, on the inside of the glass bottle. Ik- put the bottle aside and forgot about it un­til one day he accidentally knocked it from the shelf. I t crashed to the ground, but in­stead of smashing to bits, it shattered, hold­ing its shape. The hardened liquid held the cracked bits of glass in place. T hat gave him an idea and shortly after shatterproof glass

was developed.”“ But doesn’t all glass of th a t kind get

discolored after a tim e?” Kennedy inquired* “Nope,” Gus told him. “T he seal I juij

told you about stops discoloration to a grcnj extent and a new type of transparent filli sheet has been developed th a t’s not affecti by the sun’s rays. Good shatter-proof gliu(| will stay clear as long as i t ’s in tact.”

“ I don’t doubt th a t safe glass is a won* derftil thing,” Kennedy agreed, “but it cosl a lot of dough.”

Gus shook his head. “But i t ’s .an invest ment, a safety investm ent,” he pointed ou| “ Fifty percent of all the injuries in auto mobile accidents come from flying glasl Twenty or th irty bucks isn’t much to spent to make your car fifty percent safer to ridi in, is it ? One good sm ash-up, when yo| have a car full of people, will cost you lot more than th at in doctor’s bills aloni

"V /'O IT K E paying a doctor right now an< I accidents like yours can happen ailj

time. Generally it w on’t be your faul eil h e r .”

"I guess you’re right,” said Kennedy aflti a pause. “Suppose you fix m y car up will it. With children in the family, safety m«iilj something.”

“Just the windshield?” Gus asked glandj ing at Kennedy.

“ Not on your life!” Kennedy replied. "I|I do it a t all, I ’ll do it right. Put in ~:<H glass all round.”

“ Fine!” said Gus as he w rote out tlif order. “Safety isn’t something to buy \ parts. Put it in front, back and sides ati driving a car will be less of a worry to youl

mH/A A T T E R ®

? c

WHY YOUR CAR’S MOTOR WILL OVERHEAT(C ontinued from page 56)

low speed may be lifted clear off the fan pulley by centrifugal force at high speed. A belt can be pretty loose and still drive the fan when the m otor’s idling.”

‘‘I* certainly beats all how you can root out trouble on a car,” Crowley said admiringly to Gus when the trip to Round Lake was re­sumed. “H ow ’d you know the cooling system was clogged up. All you did was pat the radia­to r here and there.”

Gus chuckled. “Y ou’re right, th a t’s all I did but it told the story. And th a t's the simplest way to find out w h a t’s the m atter when a car overheats. Your radiator was cooler a t the bottom than at the top. That showed me the w ater wasn’t circulating. If it had been hot all over, I ’d have known the w ater was circulat­ing but not as fast as it should.

*'¥ T N E V E R fails. If the rad iato r’s hot all ■I over, look for a loose fan belt, a clogged

radiator, too rich a mixture, or punk ignition. If i t ’s cool a t the bottom , som ething’s com­pletely shutting off the w ater.”

“Yeah, and fan belts cause most of the trouble,” Joe added. “N ine-tenths of the cars th at are brought to the Model Garage need new fan belts, don’t they, G us?”

The mechanic agreed with a nod. “And the tough part of it is, loose fan belts cause a lot of other troubles especially when the fan belt runs the generator as well as the fan. I f it slips, the generator slows down. T h at means the generator doesn’t charge the battery as fast as it should.”

“ G osh!” exclaimed Crowley shifting into second gear for the long pull up R ound M ountain. “ I never thought of that. At th a t rate, you ought to check the fan belt every tim e you use the car.”

“T hat wouldn’t be a bad idea,” Gus agreed. "B ut i t ’s simpler than that. The fact th a t the fan belt drives the generator makes it easy. All y ou’ve got to do is check the am m eter reading now and then when all the lights are off. I f it reads lower than usual, the first thing to look for is a loose belt. Then about once every m onth let a service man look a t the belt just to make sure i t ’s O. K.

“And another thing,” Gus went on. “Loose fan belts and clogged radiators a ren’t the only things tha t'll make an engine overheat. A weak ignition coil can cause a lot of trouble too. If the coil is breaking down, the engine misses fire and overheats.

” 1 OTS of times a high compression m otor -L^ will overheat because the engine gasket

has blown internally. The cooling w ater leaks into the m otor and the exhaust fumes escape through the radiator.”

“M otors must be like people. As soon as they get sick they run a tem perature,” C row ­ley grinned.

“Right, and th a t’s why it pays to go over your car now and then and get it in shape,” said Gus. “After a hard winter, a car needs some attention. Flush the radiator, clean the honeycombs by squirting a hose a t them from the inside, change to summer oil, go over the ignition system, check the carburetor, and clean up the m otor generally.

“In other words,” he concluded “give your car a spring cleaning if you w ant your summer trips to be free of trouble.”

FRANCE HAS WORLD'S FASTEST DESTROYER

F ran ce boasts possession of the fastest to r­pedo-boat destroyer in the world. This vessel, the new Cassard, maintained a speed of more than forty-eight miles an hour for three hours in a recent test at sea.

T IM E A L W A Y S M O V E S F O R W A R D

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O F I T ! T H IS C O U P O N IS AN IN V IT A T IO N

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FURNITURE NEEDS

( C o n tinued fro m page 8 7 )

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T h e g re a te s t a sse t of a shop such as ‘T h e F a ir E xchange” is its ab ility to m eet sudden s itu a tio n s and p rov ide p rac tica l answ ers a t sh o rt n o tice , as M iss S tep h en ­son and M iss Sheehan know . A nd service — doing necessa ry th ings fo r people and doing it m ore efficiently th an th ey could th em selves— is th e secre t of m any a b u si­ness th a t flourishes in sp ite of the de ­p ression . So “ T h e F a ir E xchange” th rives, fo r w h e th er one w an ts a D u tch cupboard fo r a specia l co rner, a screen to h ide the sto v e or ice-box or roo m -m ate , or fu rn i­tu re fo r a six-room a p a rtm e n t, given tw e n ty -fo u r h o u rs ’ no tice , som ehow , som e­w here, M iss S tephenson and M iss Sheehan are ab le to p ro v ide th e pe rfec t answ er, in sp ite of less th an a y e a r ’s independent business experience, in sp ite of no cap ital, and in sp ite of th e m uch -ta lk ed -o f dep res­sion .— H . H ., B oston, M ass.

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TE C H N IC A L AND IN D U ST R IA L COURSESD A rc h ite c t □ B rid g e E n g in e e rD A rc h ite c tu ra l D ra f ts m a n □ A u to m o b ile W ork

□ P lu m b in g □ S te a m F i t t in g□ H e a tin g □ V e n ti la t io n U S a n ita ry E n g in e e r□ S h ee t M e ta l W o rk er□ S te am E n g in ee r□ M arin e E n g in ee r□ R efrig e ra tio n□ R . R . L ocom otives□ A ir B rak es□ T ra in O p e ra tio n□ R. R . S ectio n F o re m a n□ R . R . B rid g e a n d B u ild in g

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a n d C .P .A . C oach in g□ B o o k k eep in g□ S ecre ta r ia l W o rk□ S p an ish □ F ren c h□ S a lesm an sh ip□ W a llp a p e r D e c o ra tin g

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S ecre t s o f Success

OREGON YOUTH CREATED HIS OWN “JOB”

( C o n tin u ed fro tn page 95 )

n o v e lties m ight sell in a b igger way. H e packed a little su itcase of sam ­ples and h ied h im self to P o rtlan d . H e a d m its th a t he was actu a lly a little su r­p rised w hen one of P o rtla n d 's largest s to res a sked fo r th e exclusive handling o f th e wood novelties a t P o rtlan d . W ith fo rtified courage he m arch ed on to o th er tow ns and m et w ith equal success. H e w as e igh teen then , and help ing to p u t h im self th ro u g h his sen ior y e a r in high school. W o rk in g op, he a lso com pleted a y e a r of s tu d y in the law school of W illam ette U n iv e rsity a t Salem . B u t F red w asn ’t in te re s ted in th a t over-crow ded p ro fession . H e w an ted to w ork w ith wood, and co lors and d eco ra tiv e m ate ria ls . W hen he is financially able, he confesses, he in te n d s to s tu d y in te rio r decorating .

In th e m ean tim e his fa th e r purchased a o n ce-upon-tim e n u rse ry n e a r P o rtlan d . T h e p lace is overgrow n w ith m an y v a ­rie tie s o f w ood th a t are d e a r to th e h ea rt of a wood lo v er. F red now dev o tes all of h is tim e to h is wood w ork. T h e N a ­tio n a l A m erican Legion conven tion at P o rtla n d in S ep tem ber, 1932, w as a find to h im . F red h eard o p p o rtu n ity knocking and he opened the d o o r wide. As a conse­quence L egionnaires re tu rn e d to th e ir hom es w ith m an y a funny little wooden an im al, fow l, and w h a t-n o t in bags and p ockets. In due tim e o rd ers began com ing in fro m these hom e tow ns. F red is now selling lo a lm ost ev ery s ta te in th e U nion and th ere is one less boy am ong th e g reat a rm y of “ T h e U n em ployed .”— L. L. M ., S ilverto n , Oregon.

Cash PrizesTH I S d e p a r tm e n t w ill g iv e $5.00 fo r

e v e ry t r u e su c c e s s s to r y s u b m itte d b y r e a d e r s o f P o p u la r S c ie n c e M o n th ­

ly , an d w h ic h is a c c e p te d f o r p r in t in g in t h is m a g a z in e .

M a n u s c r ip ts w ill b e ju d g e d o n th e in d iv id u a l m e r i t s o f th e c a se an d c i r ­c u m s ta n c e s in v o lv e d . O n ly s to r i e s in w h ic h th e a u th o r ’s su c c e s s , o r th a t o f so m e o n e k n o w n to th e a u th o r , h a s b e e n g a in e d b y so m e m e th o d o f e d u ­c a t io n a l g u id a n c e , f i tn e ss f o r th e jo b , o r a p p l ic a t io n to th e w o rk w ill b e c o n ­s id e re d . W e a re n o t lo o k in g f o r th e “ g e t- r i c h - q u ic k ” ty p e o f s to ry .

M a n u s c r ip ts m u s t be co n fin e d to 500 w o rd s o r le s s . T h e y m u s t be t r u e and , i f a c c e p te d , a u th o r s m u s t be p re p a re d to g iv e u s s ig n e d s t a te m e n ts to th e e f ­f e c t th a t th e y a re t ru e . M a n u s c r ip ts s u b m itte d an d p r in te d b e c o m e th e p r o p e r ty o f th is m a g a z in e , a n d w e a re n o t r e s p o n s ib le f o r th e r e tu r n o f r e ­j e c te d s to r ie s u n le s s p o s ta g e is p r o ­v id e d f o r t h is p u rp o se . A d d re s s c o n ­t r ib u t io n s to S u c c e s s S to ry D e p a r t ­m e n t, P o p u la r S c ie n c e M o n th ly , 381 4 th A v e n u e , N e w Y o rk C ity .

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P R A T T £rV A R N I S H

L A M B E R TP R O D U C T S

SUPPRESSED KNOWLEDGE

OF THE AGEf,

W h a t s tra n g e p o w e rs d id th e anc i- e n ts p o sse ts? W h e r e w as th e so u rce o f kn o w le d g e that m a d e it p o ss ib le fo r th e m to p o rfo rm m ira c le s ? W e r e th e se p ro fo u n d se c re ts b u rn e d w ith a n c ie n t lib ra r ie s , or a re th e y b u r ie d b e n e a th c ru m b lin g T e m p le w a lls ?

T h e se w ise m en o f th e p a s t knew th e m ys te rie s o f l i fe , and po rso na l p o w e r. This w isd o m is no t lo s t ,— it is w ith he ld fro m the m ass. It is o f fe re d

f r e e ly T O Y O U i f w ith an o p e n m in d , yo u w ish to s te p o u t o f th e ru t o f m o no to no us e x is te n c e and M A S T E R Y O U R L IF E .

T H IS F R E E B O O KM a n ’ s in to le ra n c e has a t tim e s s w e p t h is

a c h ie v e m e n ts from th e fa c e o f th e e a rth , y e t se­c re t b ro th e rh o o d s h a ve p re s e rv e d th is sa c re d w isd o m o f th e a g e s . Th e R o s ic ru c ia n s , o ne o f th e se a n c ie n t b ro th e rh o o d s , IN V IT E Y O U to w r ite and se cu re a f re e c o p y o f the " W is d o m o f th e S a g e s ." It w ill p o in t out ho w yo u m ay r o c e iv e ag e -o ld tru th s . Y o u ca n le a rn to M A K E Y O U R L IF E A N E W — the fu lf illm e n t o f yo u r id e a ls a w a its y o u . A d d r e s s : f 1

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enables him to m ark the deck while playing. Special pencils w ith colored lead that rubs off on the fingers, are sometimes employed.

In an eastern city, a few m onths ago, an ingenious vest bu tton enabled a card shark to clean up several thousand dollars a t stud poker before he was caught. The six buttons running dow n the front of his vest appeared to be all the same. B ut the one just below the level of the table was equipped with a sliding top and a tiny m irror inside. In dealing the cards, he held them at an angle which threw their reflections into the m irror and enabled him to know w hat his opponents held and to bet accordingly.

THIS artifice is a new variation of the old “shiner” or “glim ” trick, in which little mirrors are secreted in rings, in match boxes, in

piles of bills, or in the chewed end of a cigar, to show the crooked card dealer w hat his op­ponent {lets. Highly-polished signet rings are sometimes employed as shiners w ithout a t­tracting a ttention . Recently, convex mirrors, which show the whole face of the card and which do not throw reflected light that would give aw ay the fraud, are being adopted.

As this is w ritten, police in a western city have reported the discovery of the latest in such devices, a “ holdout glim.” I t is a con­vex m irror attached to a lazy-tongs arm which shoots out from under the player’s vest when he pulls a wire by spreading his legs apart. The m irror is projected only when it is needed and is safely hidden out of sight during the rest of the game.

Such holdout mechanisms, strapped to the wrists with elastic bandages or hidden in the linings of coats and vests, are frequently used to switch cards or to supply kings and aces when they are needed by the crook gambler. The users are known as “machine m en.” The

STRANGE INVENTIONS USED BY GAMBLER(C ontinued from page 10 5 )

fact th a t they sometimes have to make nit. natural or machine-like m ovements in opPh ating their holdouts;.usually gives them a w d sooner or later.

In one instance I heard of, a holdout; worked too well. I t w'as designed to oppr ate w ithout any tell-tale m ovement of III hands or legs, a wire about the chest projnU, ing the lazy-tongs arm when the gambler look an especially deep breath. I t worked without a slip for more than a week. Then, in the tnlili die of a game the wearer had to sneeze. T |i| sudden intake of breath operated the dcvli# and out popped an ace in full view of ihf other players 1

Called “ the coat spider,” a small spring blade, with sharp prongs attached, is ilu.- signed to hook on the underside of a rout sleeve, holding from one to six cards tightly against the cloth.

MANY of the latest holdouts are in sta lls by experts a t the factories where they urf

made, the gamblers sending in their coat** of vests for the purpose. One device is advertint»f as being attached inside the lining in such ft way th a t the coat can be taken off, turnrtt w'rong-side-out and shaken w ithout danypfs of detection. Other silent smooth-workinf mechanisms of the kind are so perfectly com structed that they can be used even when I lift sharper takes off his coat and plays in III! shirtsleeves.

The devices I have described are by nit means all of'those used in the realm of crook rt| gambling. New ones appear constantly. Xqj are they the sporadic products of a few in«ll vidual crooks. They are factory-made atuf widely distributed.

Anyone w>ho gambles today, not only but ki: the laws of chance but is likely as well In meet the chicanery of science-using crooks, 1

CIVILIZED MEN 15,000 YEARS AGO(C ontinued from page 23)

stick and flint scraper knife were similarly embedded along with two fireplaces in which wood and sloth remains had been burned. Apparently the fires had been extinguished long before the sloth abandoned the cave. These constitute his evidence.

But w hat of the sloth m an? His features cannot yet be reconstructed for his remains have not been found. But his weapons and his tools are revealed, particularly his a tla tl and dart. The a tla tl is also known as a throwing stick. I t consists of a stick about tw enty inches long w ith a handle a t one end and a spur or shoulder a t the other. The spur engaged a little pit or cup drilled in the bu tt of the dart.

In use the atlatl and d a rt were held in the right hand, with the b u tt of the dart against the spur. Then the dart, cast w ith a sweeping overhand m otion, flew through the air with great force. The object of the prim itive device was to lengthen the sloth m an’s arm by the length of the atlatl and consequently to give him greater force in casting the dart.

TH E darts, usually, were four to five feet long, feathered like an arrowr, and were provided, around Gypsum Cave, w ith a stone

point. Even today the atlatl is found among the aborigines of Australia, in Melanesia and Micronesia and in Siberia, while the Eskimos bring down much food with this weapon.

The Gypsum Cave discoveries, associated with others in various sections of the United States, enable H arrington to catalog the ex­tinct animals with which these ancient peoples associated, including that strange Proboscidi­anlike beast whose pictograph was found by Charles Kelly not long ago on a cliff near Moab, U tah. This was a curious snouted crea­

ture, not unlike the hippopotam us. But lti_ was not the sole associate. We now have cvl dence th a t the early American lived amon(f mam m oths, mastodons, ground sloths, bison, camel, horse, muskox, four-horned antelop^ giant vulture, short-faced bear, and direwolf.

M eantim e N orth America was being prM pled by a sturdy and intelligent race, whom H arrington terms “Late Solutrean,” lit*; ground sloth people. Very low types of maid H arrington told me, such as the Neanderllml, probably never reached the Americas. Instriilfl a modern type began to filter in from Auln about 20,000 years ago. I t was their desctii^ dants whose fires he found in Gypsum Cave *

“M igrations continued in ever growing vn|-: um e,” he said, “and the Solutrian type of IllnfJ working supplanted the earlier style cxnpt ; in isolated places, such as Cuba. The time w it about 14.000 b. c. M any animals now extlntj ; were still abundant.

“M an in a higher state of developmrM reached our shores during the same periuqjj probably by way of Asia and perhaps throui'h Iceland and G reenland; but these mands kipl to the north, following the retreating glatiriw and became the ancestors of to d ay ’s Eskimo

“In the south, the ancestors of the Aninl can Indian were spreading rapidly ; cultun* were changing and local patterns developing Arid conditions were establishing themsrhnf in the southwest, particularly in the ( im p Basin. Pleistocene animals were becoming t * , tinct. Here ground sloth, horse, and especially the camels were the last to go. Farther non!* and cast, the m astodon still ranged, now lu i vading form erly glaciated country. This v** the date of Gypsum C av e!”

(Continued on page i c f l l------------------------------------------------------------------4

LIGHTING STUNTS FOR CHRISTMAS

C y / t Hotel Cleveland the pleasant comforts o f a fin e c lu b are combined with every serv ice of th e m ost modern hotel. In the h ea rt o f th e c i t y , Hotel Cleveland can t>e reached by covered p a ssa g e from th e U n i o n P a s s e n g e r Terminal and from a m o d e r n 2 0 0 0 = car garage.

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H O T E L C L E V E L A N D

fUPPREHED KNOWLEDGE

OF THE AGEf,T

W h a t G ra n g e p o w e r* d id th e a n c i­e n t* po sse ss? W h e r e w a s th e so u rce o f kn o w le d g e th a t m a d e if p o ss ib le fo r th e m to p e r fo rm m ira c le s ? W e r e the se p ro fo u n d se c re t* b u rn e d w ith a n c ie n t l ib ra r ie s , o r a re th e y b u r ie d b e n e a th c ru m b lin g T e m p le w a lls ?

T h e se w ise m en o f th e p a s t knew th e m y s te rie * o f l i fe , end p e rso n a l p o w e r . Th is w isd o m is no t lost.-— it is w ith h e ld fro m the m a ss . It is o f fe re d

f r e e ly T O Y O U i f w ith an o p e n m in d , yo u w ish to s to p out o f th e ru t o f m o no to no us e x is te n c e and M A S T E R Y O U R L IF E .

T H IS F R E E B O O KM a n 's in to le ra n c e has a t tim e s sw e p t h i*

a c h ie v e m e n ts fro m th e fa c e o f th e e a rth , y e t se­c r e t b ro th e rh o o d s h a ve p re s e rv e d th i* sa c re d w isd o m o f the a g e s . T h e R o s ic ru c ia n s , one o f th e se a n c ie n t b ro th e rh o o d s , IN V IT E Y O U to w r ite and se cu re a f r e e c o p y o f th e " W is d o m o f th e S a g e s .” It w ill p o in t o u t ho w yo u m oy r e c e iv e a ge-o ld tru th * . Y o u ca n le a rn to M A K E Y O U R L IF E A N E W — th e fu lf illm e n t o f y o u r id e a ls a w a it* y o u . A d d ro s s :

F r ia r K .T .N .R O S IC R U C IA N B R O T H E R H O O DS A N J O S E ( A M O R C ) C A L I F O R N IA

(Continued from page 97)

inchcs apart. The smaller figures, of course, are in front, with those behind growing suc­cessively larger. Colored bulbs are m ounted so that they cast their light over the fronts of the cut-outs. I f flashers are used in the sockets, and lamps of different colors em­ployed, striking color combinations appear every few seconds.

Stars are standard Christmas decorations and are particularly effective when fastened a t the peaks of roofs, on outside walls, in tree tops, and elsewhere. You can purchase ready-m ade star ornaments which take 10- w att lamps, but you will find it a simple m atter to m ake your own. Construct a rec­tangular or circular box deep enough to hold a socket and lamp. Over the front of the box nail a piece of plywood or composition wood that has a star cut in the center and is covered w ith translucent tracing cloth, shellacked muslin, or diffusing glass. Pro­vide a heavy screw eye for hanging the box on a hook. Other stars consist merely of a plain wood or fiber piece with sockets m ounted on the back, over holes through which bulb bases pass. The sta r can be painted silver or covered with tinfoil. The box structure can be modified so th at it is itself in the form of a star. Stars should gen­erally be more brilliant than surrounding lighting ornaments.

APPR O PR IA T E greetings such as “M erry C hristm as” or “Yuletide Greetings” can

be incorporated in electric signs placed across the front of your home or along the front porch roof. Perhaps the most satisfactory form of sign for home use consists of a long, narrow box just deep enough to hold a group of lamps and sockets, and equipped w ith cut­out letters in front. The letters are covered w ith shellackcd muslin or diffusing glass.

The wreath is the type of lighted Christ­mas ornam ent most used indoors. Usually it is hung in a window or on a door. An a t­tractive w reath can be made from a C hrist­m as-tree string. First make a ring of stiff wire and tape the string to it so that the eight lamps are spaced evenly. Excess elec­tric cord can be doubled up and taped in place. Cover the ring with laurel, evergreen or holly arranging the lamps so th at they project through, all on the same side. P ro­vide a colored cord for hanging the wreath to the window catch or a hook.

As in outside lighting of your home, you can use lamp strings to decorate interiors. You can suspend them over openings, across rooms near the ceiling, and, of course, on the Christmas tree. Usually the tree is the center of the interior lighting scheme, although it can be supported by lighted vases, pictures, potted plants, and table fountains. To deco­rate the center of the Christmas dinner table, you can use a m iniature ice m ountain on a large platter. The lamps can be of the usual Christm as-tree type, or several radio dial- light or flashlight bulbs may be used, wired in parallel and lighted by a doorbell trans­form er or batteries. Pile ice cubes over the lamps. I f you are careful, you will not need to provide guards for the bulbs.

You m ay experience a little difficulty in connecting outdoor lighting equipment to your house circuit. Usually the problem can be solved by running one or more rubber- covered cables from an interior source of current. A simple way of getting the wire outdoors is to cut a board about 3 in. wide and long enough to extend across the bottom of a window when the sash is raised. Bore a hole or cut a notch in the board for the wire. Lower the sash against the board and insert a stick above the sash to lock the window, if no other locking device is pro­vided fo r this purpose.

The following table is a guide for the proper selection of wire to be used in Christ­mas lighting layouts and will enable you to avoid overheating and loss of voltage and consequent lamp brilliancy through use of too small w ire:

W IR IN G TABLE (Rubber-C overed W ire)

Length of Run in FeetWatts 25 50 100 150 200 250100 14 14 14 14 14 14400 14 14 14 14 14 14500 14 14 14 12 12 101,000 14 14 12 10

B. & S. Gage

Number

F o r la rger loads, use m ore c ircu its , in accord­ance w ith recom m endations of you r local elec­tric com pany or con trac to r.

N o t e : The author wishes to acknowledge the cour­tesy of the General Electric Company in providing six of the photographs used on pages 64 and 65.

N O WR E A D Y

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I N D E X

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S c ie n c e M o n th ly to find so m e hom e w o rk s h o p a r t ic le y o u d i s t in c t ly re m e m ­b e re d s e e in g ? A n d w h a t a jo b i t w as! N o o n e e v e r r e a l iz e s w h a t a w e a l th o f m a te r ia l is p u b lis h e d in th is m a g a z in e u n t i l he h a s to go th r o u g h a n u m b e r of is s u e s to find so m e p a r t i c u la r i te m .

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Y o u r c o p y o f th e 1933 In d e x is now re a d y an d w ill be s e n t f o r te n c e n ts to c o v e r th e c o s t o f p r in t in g an d m a il­in g . A fe w c o p ie s o f th e 1932 In d e x a re a lso s t i l l a v a ila b le .

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NEW FEDERAL SER\ END DESTRUCTIC

AMERICAN FAR(C ontinued from page

slopes as steep as tw enty-eight the Piedmont country of the method of cultivation will be r for slopes up to ten per cent. I: sive red hill country that extend New York City south into Geor^ will be used on slopes up to sev and strip cropping on slopes be and ten per cent. On slopes 1 and eighteen per cent the seedi the land with thick-growing grs recommended, and 011 slopes s eighteen per cent the experts wi duce the farmers to p lant trees soil in place.

MANY farmers, unfam iliar cropping, are likely to ol

method because it reduces the p the land planted with money Erosion Service experts expect t their objections by showing then cropping does for the farmer.

Used under right conditions c soil, it stops soil washing. It alsc the rotation of crops that kee] from becoming impoverished by growing the same crop year afti

Strip cropping such as now is on the prosperous Easton farr Crosse, Wise., will be used to c doubting farm er of the value of Although the average slope of t th is farm is tw enty per cent, the in them is of excellent quality, ; almost no loss of soil. A six-year crops is used. Planting is in strip feet wide. This year the strips, fi to the bottom of the slopes, \ barley, alfalfa, corn, alfalfa, and year the top strip will be corn, alfalfa, and so on down to the be slope. The thick-growing, toughr fa keeps the soil from washing the heaviest rains, and enriches t the following year’s corn crop.

Ruined and abandoned farms object lessons of the evils of soil 1 even more serious is the damage ing done to some of the richest in America.

There is, for example, the fam growing Black Belt of central T are gentle, averaging no more th cent. Yet a t every heavy rain, th soil melts away like so much si are no unsightly gullies, no easil; of the tremendous damage th a t is For here sheet erosion, the slo placable variety th a t takes a liln an entire field, is getting in its d

O T R I P cropping experiments ir O Belt have been highly succes is probable th at the m ethod will generally throughout this region.

A nother exceptionally rich f gion th at is being damaged by the Paluse wheat belt of Washi: sidered the finest wheat land in .

In the early spring, when the s crests of the hills has melted, but the lower slopes, erosion can be work. You can see m any tons from the upper fields being wash snow on the hill sides, and so t the streams.

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6 in. long to be p laced as in d ica ted a t D , i ts bevel being such th a t w hen it is in p lace th e rail w ill stand a t th e flare of th e legs as show n a t E . T h is angle b lock, w hich should be cu t and p laned v e ry care fu lly , also m ay be used in c u ttin g the fo o t rails.

I t is obv ious th a t if each rail is held in th e box against piece D and saw ed accu ra te ly as gu ided by th e cu ts B , the cu t will h ave the correc t bevels.

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V J

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T he bevel box and how it is used to c u t the com pound angles ; and one way to fasten, the top.

and fit th e ra il, face side dow n, ag a in st the sam e su rface . I f th e leg and rail do n o t fit, a fine shav ing or tw o m ay be tak en fro m th e side of the leg or from th e end of th e rail. I n th e la t te r case, be sure th a t the bevel of th e ra il is n o t changed.

In an tiq u e tab les of th is typ e , m o rtise an d ten o n jo in ts w ere used , b u t fo r th e sake of sim p lic ity dowel jo in ts m ay besu b s titu te d . F o u r >H?-in. dow els shouldbe fitted in each jo in t of th e to p rails, an d tw o in th e foo t rails. M ake sure th a t th e holes in each ra il a re bored paralle l to th e face and edges of th e ra il as a t F in th e assem bly draw ing, and th a t each ho le in th e leg is bored p a ralle l to th eface an d so as to conform to th e flare asa t G. T h is insures the s tra ig h tn ess o f th e dow el holes.

S m ooth th e ra ils an d assem ble tw o p a irs o f legs w ith th e ir co rrespond ing rails, tak in g care th a t th e rail and leg faces a re in th e co rrec t re la tio n to each o th er. W hen th e glue h as th o ro u g h ly h a rdened , fit th e o th e r rails in th e o th e r sides of th e legs by the sam e m ethod , and rep ea t th e g luing process. T h e to p of each leg should be cu t dow n to co nfo rm to its a d jo in in g top rails, and th e to p m ade , fitted , and fastened w ith dow els set in to the ra ils and th e to p o r w ith screw s as a t II .

R em ove blem ishes and superfluous glue and sm oo th and san d p ap er all su rfaces to m ak e read y fo r finishing. T h e tab le m ay be fin ished in th e n a tu ra l w ood by rep ea ted oilings or given th ree coa ts of orange shellac. I f p re fe rred , th e wood m ay be s ta ined , given th ree coats of th in shellac, each rubbed w ith 4 / 0 sa n d ­p ap er, and then po lished w ith wax to o b ta in a finish.— C. A. K .

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unknown” piece of appttri ber, complete directions U various uses, e tc ., are glvufi parts, ready to assemble in nPrice, com plete................

Add 10c for postage anil f

from beginning tothe la tes t facts — color television, cathode ray tu b e , e tc . Timely hin ts on con »true t to g seta. P rice only 1 5 c postpaid .

WINSTON & COMPANY. Dept. 18, HflRTLAND, *

Only Boats With Full Length Spray RailsK e e p p a s s e n g e r s p e r fe c t ly d r y — e v e n a t h ig h s p e e d s .C ata lo g a lso show s sn ipe sail b o a t c o m p le te w ith sail fo r $165. T w o b ig fac to ries .P r o m p t s h ip m e n t .

CA TA LO G F R E E W rito for your copy. S tate ttind o f boat in which you a re in tere ste d . M otor Boat* I I

T H O M P SO N B R O S . B O A T M FC ,2 1 9 A n n S t . . PESH TIG O / W rit* to U 1 9 E)m »(,,------------ jW ISCO N SIN either },lacej

L atest .Model H aenelrepeating pistol. S turdy , massive construction, easy cocking lever, 100 shot m ag­azine. F o r target. Powerful for small game. 151ue or N ickel finish, shoots B .Ii. steel shot. W eight 18 oz. F R E E —500 Shots, 10 T argets, L ea ther Jlolster.

$2.00 deposit on C. O. D.F R E E Catalog—Colts, H ifits . B inoculars, PlrHUDSON SPORTING GOODS P-52 WARREN

M O N E Y IN M USHROIE arn upw ards of $25 w eekly or m otif fo r us in ce lla rs or ou tbu ild ings. Iliui p a rtic u la rs free. E s ta b lish ed 25 yeM(

A D A N A C M U SH R O O M CjD e p t. J T o ro n to |H

BIG stp.amree MONEY AllT a k e O rd ers fo r P opu lar ScWH

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(X a u ‘ I

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p . L

p n F you d o ^ |W not add at least 'is!

> INCHES TO 1 5 YOUR CHEST

2 INCHES TO YOUR BICEPS

. . . . i t w i l l c o s t y o u n o t h i n g ISigned i > , /

GEORGE F. JOWETT W ’A* \ //j

T H E M YSTER IO U S W O R LD W ITH IN Y O U

kThose s tra n g e fee ling s o f intuition and prem o- fniVion a re the u rges o f your inner se lf . W it h in . i you th e re is a w orld o f unlim ited p o w er. L e a r n ' to uso it and you can do the right thing a t the right tim e and rea lize <9 life o f h app iness and I ab u n d a n ce . Send fo r n ew , F R E E , S E A L E D ' B O O K tha t tells how you m ay re c e iv e these* te a ch in g s . A d d re s s : F R IA R K .Y .E .

R O < I< R U < IA H B R O T H E R H O O D ']I SAN JOSE CALIFORNIA

WANTED • • • BRANCH • • • MANUFACTURERS

On sm all or larpre scale fo r o u r N E W L IN E o f C ast M etal 5 & 10c N ovelties. A sh tray s , Radio O rnam ents and o th er .nil y ear se llers. No special p lace o r experience nec­essary as w e fiirnish full instructions with moulds and cooperate in selling, also bay finished goods. Chance of a life-tim e for man with small capital to get into this new and profitable industry. If you mean strictly business and a re over 21 w rite AT ONCE for details as 1934 wholesale season is now startiiiK.

METAL CAST PRODUCTS CO., Dept. E1 6 9 6 B o sto n Road New Y o rk , N. Y .

Afeiv Adding Machine Fits V e st P o ck et!Adda, s u b tra c ts , m u ltip lie s , an d d iv id es like $300 m a c h in e —y e t it c o s ts on ly $2.50. W eig h s o n ly 4 ou n ces. N o t a toy — g u a ra n te e d fo r life tim e . P e r ­fectly a c c u ra te , l ig h tn in g fas t. S ells ou s ig h t to b u sin ess m en . sto rek eep ­ers, hom es — a ll w ho use figures.W rite a t once fo r F re e f l p C W T C Sam ple O fTeran d M on- H U C H I O e y -M a k ln g P la n . 1 0 0 % P r o f i t ! t . M.CIEMH. 0«is(.Sn, 303 * . MwmeSt., ChlCH?

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flashlight com bination; m agnify in g ,un breakab le bulbCarries your keys: illuminates dark corners: beautiful genuine leather case; removable flash; standard b attery , renew able a t 5 and - 10c store*, lasts for months. You'll be delighted with this a ttractive novelty. $1.00 bill check, postage or M. O.; or pay postman.

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M O N E Y IN M U S H R O O M SICarn upw ards of $25 w eekly or m ore, grow ing for us in c e lla rs o r o u tb u ild in g s . Ready m arket. We in s tru c t you. B ooklet and p a rtic u la rs free.

A D A N A C M U S H R O O M C O .Dept. J Toronto 10, C a n a d a .

-LETTER WORDSN A T IO N A L CO N TESTAN TS

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SP EED W A Y M AG A ZIN E............... g ives sp ills , th r i lls , action photos,resu lts of A m erican and F o reign races. County F a ir and W orld S tra ig h taw a y rec ­ords. L a s t m inu te in fo rm ation on rac in g cars and d rive rs . Q uestion and answ er de- nnrtm ent. Issu ed m onthly . $2.00 year—91.00 six m onths—25£ sing le copy.

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UT. Not sen t to b o ys u n d er 17 yea rs of ag e ., Cocke, Book Dept 13-63 1920 SianyriJt Aye.. Chicago.IH.

NEW CHEMISTRY TABLE FOR HOME USE

(Continued from page 106)

the back stile and supported on two small brackets. Tack a small bead around the edge to keep the bottle from slipping off.

Before fitting and hanging the cupboard doors, stand the cabinet in its perm anent place as the frame springs to suit the floor.

Mortise a small lock into the back face of the right door and put an elbow catch under the upper shelf. The drawers can be made se­cure by boring through the partition into the draw er sides, for inserting lengths of dowel­ing screwed to small knobs. In this way the drawers cannot be opened until the cupboard is unlocked.

Paint the top of the table w ith some good alkali and acidproof m aterial. If a ready-m ixed paint is not easy to get, mix your own accord­ing to a recipe found in any comprehensive form ula book. Two coats of boiled linseed oil are sufficient for the rest of the cabinet.

CORRUGATED SEPARATORS USED IN PLANT BOX

C 'E E D L IN G S grown individually have a ^ much better chance to develop complete root systems, and consequently make better progress when set out, than those grouped together in a box or bed. For such planting a knockdown box m ay be made to utilize the corrugated board separators from food­stuff cartons. The box dimensions should be planned to suit the separators, used. In this case they were taken from a catsup carton. The ends of the box are mortised and ten­oned as shown, and a hole is bored through the tenon to enable the use of half-round

S eed ling box w ith one end rem oved to show th e p a rtitio n s , w h ich a re c o rru g a ted board

wedge keys for locking the parts together. The box is easily assembled, yet m ay be stored in a small space.

At planting time, when seedlings have a t­tained proper size, one or more of the de­tachable sides are removed, a long thin knife is run through to slit the corrugations, and the earth cut into tw enty-four sections, each holding one plant. These blocks hold their shape while transplanting and the rootlets w ithin are undisturbed. Plants thus moved continue growth w ithout wilting.

Painted, these boxes m ay be used over and over. They prove a real help to the gardener in both vegetable and flower gar­dens.— E l t o n S t e r r e t t .

W hen ordering back issues of P o p u l a r S c i e n c e M o n t h l y , please send 25 cents for each issue except the current one and the three issues immediately preceding. These, four issues are only 15 cents each.

YES SIR! T h re e in ch es o f m uscles a d d e d to y o u r c h es t a n d a t lea s t tw o in ch e s t o y o u r b iceps, o r i t w o n ’t co s t y ou a p en n y .

W h ile m y co u rse is n o t in fa llib le . . . so m an y o f m y p u p ils have g a in e d tre m e n d o u s p h y sica l d e v e lo p m e n t th a t I am w il lin g to s ta k e m y r e p u ta tio n th a t I can d o th e sam e fo r y o u . . . remember . . . i f I fa il i t co s ts y o u n o th in g !

I w a n t to te ll y o u fe llow s . . . th e re ’s s o m e th in g a b o u t th is " s tro n g m an b u si­n e ss” th a t g e ts y o u . . . thrills y o u ! Y o u ’ll g e t a g re a t k ick o u t o f i t . . . y o u ’ll fa irly feel y o u r m uscles g ro w .

T h o se sk inny fe llow s w h o are d isco u rag ed are th e m en I w an t to w o rk w ith . M any an u n d e rw e ig h t w eak ling has com e to m e fo r h e lp . . . com ple te ly d isco u rag ed . . . I have d e v e lo p ed a .re a l he -m an ’s p h y siq u e fo r th em . . . co vered th e ir bod ies w ith layers o f m uscles . . . m ade them s tro n g and p ro u d . . . eager and ready to face the w o rld w ith th e ir new p o w er!

T ak e m y fu ll cou rse , i f i t d o es n o t d o all I say . . . i f you are n o t com ple te ly sa tis fied ... and you be th e ju d g e . . . th e n it w o n ’t co st you o n e pen n y !

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I w ill n o t lim it you to th e arm . T ry any o n e o f my te s t courses lis ted b e lo w a t 25C. O r, tty a ll six o f them fo r only $1.00.R u s h th e Coupon T O D A Y !

Mail vo u r o rd er now and 1 w ill include a F R E E COPY of ‘ 'N E R V E S O P ST E E L ,M USCLES L IK E IR O N ." I t is a priceless book to th e s tre n g th fa n and m uscle builder.I t describes ray r ise f ro m a w eak , puny hoy to be one o f the w o rld ’s s tro n g e s t a th le te s w ith a ch est m easurem ent o f 49 inches and a n 18 inch bicep. I t is fu ll o f p ic tu res o f m arve lous bodied m en w ho te ll you d eci­sively how you can build sy m m etry and s tre n g th th e Jo w e tt W ay I R each O ut —G rasp T h is Special Offer.

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Name ____________ _____________ _— Age_

S c i e n c e

T H E M Y f T E R I O U f W O R L Dw i t h i n y o u

LIVE ADVENTURES WITH DEAD ANIMALS

(C ontinued from page 1 1 2 )

t.irdvark, beloved of cross-word puzzlers. Of one, the whole body is show n; of the ■ I her, only the head and long proboscis peep Irom a burrow .

The hunt for these specimens brought onlyI Solenodon and a half. The quaint animal, urvival of a primitive type, was considered

rvtinct, and a Russian museum had the single liecimen in the world when D r. G. Lagai and \ H yatt Verrill got these. To do it took a lirush with Santo Dominican revolutionists, much quinine, and m onths in the jungle u hence Verrill returned gaunt, bearded, with one entire specimen and p art of another. Also, lie reported that this freak of nature roots like a hog, has claws, cats snakes, chickens,II nd bedbugs which it searches for in houses, mmcs out only at night, runs sideways, and when pursued, trips itself and tumbles head over heels. Then it sticks its head into a hole and is captured w ithout a fight. The female, shown whole in the museum, gave hirth soon after capture, to three naked young, and three days later died.

THOUSANDS of people take pets that have died to taxidermists for m ounting.

These include dogs, cats, birds, and monkeys. Hut there have been ocelots, garter-snakes, 11 nd the pet horse of a movie actress. Almost nil ask that their former companions be pre­served in some favorite pose of life, head on one side, ear cocked, or a wag put into a pet poodle’s tail. Occasionally, they want I he anim al’s body embalmed for burial.

There is real fun in doing jobs for the movies, as many taxidermists do. They Marted in the early days, when enthusiastic tUrectors sometimes had stuffed Bengal tigers Malking the Maine woods. Soon they began lonsulling taxidermists. One assignment they rave Sauter, was producing 200 rats that would follow a Pied Piper of Hamelin. He {tot the ra ts from rat catchers, m ounted them, and supplied each with an invisible wire to lie hooked up with other wires. The day lie delivered them at a Long Island studio, lie turned some loose among the feminine extras—with satisfactory results.

(Low movie taxiderm y has been perfected, li shown by the hippopotam i that, in a cur­rent picture, realistically raise their heads iihove the surface of a river, then lower them. The heads were m ounted and w aterproofed nt the Clark studio.

An odd job is making plaster casts to Illustrate street railway accidents for lawsuits. The casts show the rail, cobblestones, and other surroundings so they can be explained In a jury . By-products of taxidermy are lent her articles, screens, lampshades, elephant- Jtmt umbrella stands, and other useful things.

PKRHAPS the highest flight of modern taxidermy, is creating animals that never

lived. An English sea captain asked Sauter to in,ike him a mermaid. After some cogitation. |u took the lower part of a large codfish, and Hie upper p a rt of a lady monkey, m ounted them, and sewed them together. Having pro­vided the mermaid with an elegant tail, he crowned her head with long, wavy locks Iiiadc from a horse’s tail. To give her a hrautiful face and other finishing touches, In1 called in Carl Rungeus, well-known ani- hml painter. Then he put the finished pro­duct in a glass case, garnished with seashells.I'hr captain was tickled to death.

"W ait till I show this to my landlubber Incnds!” he chuckled.

Sauter was tickled to death, too."Guess I ’ll make some more merm aids,”

ftp «aid.He did, and sold them to side sho s. Per-

liH|>x you have seen one.

Those strange feelings of intuition and premonition are the urges of your inner self. W ithin you there is a world of unlimited power. This dynamic, strange, mental force is secreted in the recesses of your mind. Its astonishing helpfulness you sense by an oc­casional hunch or inspiration. Learn to properly direct and control it and you can do the R IG H T T H IN G at the R IG H T TIME, and master your life.

THIS FREE SEALED BOOKThe R o s ic ru c ia n s , an ag e-o ld b ro th e rh o o d (not a re lig io n ), h a v e shown thou­sands o f m en and wom en how to b ring h ap p in ess and a c h ie v e m e n t into the ir lives by the use o f the se litt le -u n d e rsto o d p o w ers o f se lf . T h e y in v ite you to w rite to d a y fo r the se a le d g ift book th a t te lls how you m a y o b ta in these sta rtlin g tea ch in g s fo r stu d y an d use in yo u r d a ily a ffa irs .

A d d re s s : F r ia r F.MAi.

ROiKRUCIAN BROTHERHOODSAN J O S E .................... CALIFORNIA

R em e m b e r— The R o t ic ru c ia n O rd e r is N O T a R e lig iou s O rg a n iza t io n

4 Inches of Muscle Put On Your Arms

. . . o r we will refund your moneyT h e G e rm a n I ro n S hoo M u sc le B u ild e r is th e g re a te s t ex e rc ise r m ad e to bu ild g ia n t-lik e a rm s , w ide p o w e rfu l shou lders, b ra w n y b ac k an d tre m e n d o u s ch est. Jo h n F ilepono a d d e d 5 in . to h is a rm s . B. P e te rs 1 in , on e a c h b ic e p th e firs t w eek ,

SPECIAL FREE OFFERThe Iron M an 's Fam ous 60-day illu s­tra te d P ic tu re course o f exerc ise in s tru c ­tion , and S tre n g th R e g is te r is included F R E E , thereb y m ak ing th is th e g re a te s t body build ing offer ever p resen ted . Follow the choice of cham pions and get th a t grip of steel. R ing in now on our special offer for the lowest priced and biggest resu lt getting exerciser under the sun. Send for free illu stra ted informa­tion. No obligation. P rin t your name in m argin and mail to-day toA m erican Athletic A p p lia n ce Co.

<i32ii P au l Street Dept. P S 4 , P h ila d e lp h ia . Pa.

This Book Has Helped Thousands to Success T h e R e a l E s ta te E d u c a to r

The New Revised Edition, contains Questions and An­swers; Brokers’ License Law;

Dictionary of Words and Phrases in Real Estate and Construction; How lo Appraise Property; Law of Real Estate; How to Advertise Real Es­tate; Legal Forms; Commissions to Agents; “ Don’ts” in Contracts, etc. 288 pages. Cloth. Postpaid $2.00.

T h e P o p u la r S c ie n c e M o n th ly

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10 D a y T ria l N o M o n ey D ow nP o s itiv e ly th e g re a te s t barg a in ev e r offered . A g enu inela le m odel t'n d e rw o o d No. 5 for only $39.Vii (cash l o r one a sy te rm s , l ia s u p -to -d a te im p ro v em en ts including s ta n d a rd 4-row keyboard , backsp .u 'e r. a u to m a tic ribbon rev e rse , sh if tlo c k key , 2-color ribbon, etc. The iierfect a ll p u rp o se ty p e w rite r . C om pletely vefm isheil and F U L L Y G U A R A N T E E D .

Money-Back GuaranteeSend coupon for in -d ay T ria l - if you decide to keep itpay only $.1.00 a m o n th u n tilS44.90 (te rm price) is paid. L im ited o f f e r - act a t once.

”1

Learn Touch Typewriting

Rend Underwood No. 5 < F. O. B.. Chicago a t once for 10-days tria l. If I Am not perfectly satisfied 1 can re tu rn it express col­lect. If I keep It I will pay $3.00 a month untill 1 have paid $44.90 ( term price) in full.

| N am e........................................................................................ Age.

Tow n..........................................................................Stale

in the shopsof COYNE

PICTURES, and o ther fine Radio jobs! Learn by practical work—10 weeks qualities you. Write TO­DAY for FREE BOOK and Special Offer! Free l ife­time employment service.H. C. Lewis, Pr$s. Coyne E le c tr ic a l S ch o o l5 0 0 S . Pau lin a S t . D ep t. 4 4 -4 H , C h ica g o , III.

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Im proved C O N N Q U E R O RWorW ’s la rg e s t m a n u fa c tu rer a n ­

nounces sen sa tio n a l im provem ent in Hand In stru m e n ts . N ew p a ten ted VO- CA HELL revo lu tion izes to n e effects. E a s ie r to p ta y .Y o u 'd d c v e lo p ta le n t fa s t w ith th ese new C onns. Choice o f w orld 's g re a te s t a r tists .S ire your d ea le r or w rite to d ay fo r F R E E HOOK and hom e tr ia l, easy paym ent offer. Men tion instru m en t. C. G. CONN. LTD. M2 CONN BUILDING

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T H E M YSTER IO U S W O R LD W IT H IN Y O U

kThose s tra n g e fee lin g s o { intuition and prem o- fn ition a re the u rges o f your inner se lf. W ith in < | you th e re is a w o rld o f un lim ited p o w er. Lea rn ' to usa it and you can do the rig ht thing at r ight tim e and rea lize a life o f hap p iness <

'a b u n d a n c e . Send fo r new , F R E E , S E A I - B O O K th a t te lls how you m ay re c e iv e

teach in g s . A d d re s s : F R IA R fl.S .U .

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k Enormous neiv demand sweeping roun- Itryl Prices going UP! Grow fancy "White Queens'’ in cellar, or other idle space.

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» * p t . 5 5 3 , 2 8 B lo o r S t - W .f T o r o n t o , O n t .

Learn to DanceI can learn all the modern dnnceB—the latest go steps. the now Fox Trots, dreamy WaJtzea, irt Collegiate Steps, and popular Socicty Steps lorae.easily and quickly. New chart method

jo b dancinnras simple as A -B-C . No music fp*rtncr required. Don’t be a wallflower.Jirn to dance.Complete course— 256 pages.

Illustrations. Bent cn l> D ays’ Free Tiriul.$20.00 course. Send no money. Pay

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P r in t Y ou r O w nC ards, S ta tio n e ry . A dvertising ,

labels, p ap e r, circulars, ta g s, e tc . S ave money and tim e. Sola d irec t from fac to ry only. J u n io r P r e s * $ 5 .9 0 , Jo b P re s s ,$11, P ow er $149. D o p opu lar ra ised p r in tin g like en­g rav in g w ith any o f our p resses.

P r in t fo r O th e rs , B ig P r o f it s . P ays fo r i t s e l f in a sh o r t tim e, Rasy ru le s s e n t. W rite fo r free cata log o f ou tfits and all d eta ils .The Kelsey Co., H-33. Meriden, Conn.

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RAZOR-BLADE TOOLS AID IN DELICATE CARVING

F o r delicate patterns on small ship m od­els, for intricate inlays on small toilet articles and m ake-up boxes, and for small overlay initials and similar hand carving, I use a set of tools made from old razor blades. A pair of wide, blunt-nosed pliers will serve for breaking the blade. Be careful to have the sides taper so th at they are a trifle nar­rower at the blade edge than at the handle, as shown a t B. This is done so that when the wire is tightened around the handle, it will hold the blade securely.

The handles are whittled from cigar-box wood. After they have been roughed out, 1

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make a cut across the handle, about in. from the blade end, and split the wood up to this cut, as shown a t A. This split part is carefully sanded, the blade glued in (for convenience in handling), and the split piece put back into place. The entire end is then tightly bound with No. 22 gage enamel-cov- ered wire. After the blade is in place, the handle may be trim m ed, sanded, and enam ­eled, lacquered, or finished in any m anner.

Tools Nos. i , 2 , j , and 4 are for use on small carvings; Nos. 5 and 6 are used for cutting balsa wood to be used in airplane modeling, and No. 7 is a medium-sized needle for scribing and for i&e as a scratch point.

A 2-or 3-in. strip from an old razor strop, glued to a block of wood, serves to keep the blades in condition. A neat and convenient container for these tools was made from cigar box wood and patterned after the puz­zle box illustrated in a previous issue (P.S.M ., Nov. ’32, p. 104).—E. P. I Ia le .

WATER GLASS HAS MANY USES IN THE SHOP

A l t h o u g h w ater glass (chemically, a solu­tion of sodium silicate) is most commonly associated with the preservation of eggs, it is a cheap and useful material for many home workshop purposes. Used as a glue, it will fasten cardboard parts quickly and securely. I t gives a glasslike protection to bottle labels to which it is applied. Pho to ­graphs may be m ounted quickly w ithout wrinkles and are actually reenforced by this material. If it is applied in a thin film with a roller to the face of a dull photograph, it will impart a liijurh gloss and dry in five seconds. Rubbed with a cloth into the sur­face of unfinished wood, it brings out the grain and at the same tim e acts as a quick- drying filler to which shellac or varnish can be applied immediately. It holds flat wood surfaces together tenaciously. W hen mixed with plaster for casts, it gives the latter a close grain and sheen th a t improve their ap­pearance. A water glass and plaster m ixture is also handy for tem porarily recementing light bulbs th at have come loose from their screw bases. A drop mixed with printing ink on the rollers of a card printing press will improve the quality of the work in some instances and hasten the time required for drying.— G. S. G.

G e n t l e m e n :U n d e r t h e R e c o v e r y

A c t I ' m n o w w o r k i n g l e s s t i m e a n d I h a v e d e c i d e d t o d e v o t e a r e g u l a r p o r t i o n o f m y s p a r e t i m e t o m a k i n g m y s e l f m o r e v a l u a b l e t o t h e c o m p a n y . ][ h a v e a h u n c h ~che m a n w h o g e t s a h e a d t o m o r r o w w i l l u s e h i s h e a d t o d a y . I ' m i n t e r e s t e d p a r t i c ­u l a r l y i n m e c h a n i c a l e n g i n e e r i n g a n d w i l l a p p r e c i a t e i t i f y o u w i l l s e n d m e y o u r f r e e i n f o r m a t i o n o n t h i s s u b ­j e c t . I w a n t t o g e t s t a r t e d r i g h t a w a y .

V e r y t r u l y ,

IN TER N A TIO N A L C O RRESPO N D EN C E SCH O O LS

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T h e se w ise m en o f th e p ast knew th e m y ste rie s o f l i fe , and p e rso n a l p o w e r. T h is w isdo m is not lo s t .— it is w ith h e ld fro m th e m ass. It is o ffe re d

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a c h ie v e m e n ts fro m th e fa c e o f th e e a rth , y e t se­c r e t b ro th e rh o o d s h a ve p re se rv e d th is s a c re d w isd o m o f th e a g e i. T h e R o s ic ru c ia n s , o n e o f th e se a n c ie n t b ro th e rh o o d s , IN V IT E Y O U to w r ite and se cu re a f r e e c o p y o f the "W is d o o f th e S a g e s ." It w ill p o in t o u t how yo u rnoy r e c e iv e a ge-o ld tru th s . Y o u ca n le a rn to M A K E Y O U R L IF E A N E W — th e fu lf illm e n t o f yo u r id e a ls a w a its y o u . A d d re s s : Cg_ HlPll

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UNCLE SAM’S TREASURE HOUSE FOR GOLD

(C ontinued from page 5 2 )

Dredging for gold has been successful in both Alaska and California. I t usually is used for mining wide gravel deposits. All the ma­chinery is mounted on a barge which floats in a pond made by filling w ith water the ex­cavation it has made. A line of heavy buck­ets m ounted on an endless conveyor dig up the gravel and deliver it to a hopper in which it is washed. Then, under water pressure, the gravel is forced through revolving screens called trommels, and further disintegrated. I t then is sent through sluice boxes, in which the gold is caught, and the tailings are slacked behind the dredge by a conveyor belt. In 1932, over three quarters of the placer-gold production of both Alaska and California was mined by this method.

T T Y D R A U U C K IN G is another form of -L J- large-scale placer mining that has been successful. W ater shot at high pressure from nozzles called “ giants” is used for breaking down and disintegrating the gravel and for washing it to the sluices. Under favorable conditions operating costs are' low, and pay dirt of very moderate quality may be han­dled profitably.

The simplest form of power placer mining is the use of a drag scraper operated by a double-drum hoisting engine. The hoist is located a t the head of the sluice box, and by the use of blocks and movable tail sheaves the pay d irt m ay be excavated and carried to the sluice from over a considerable area w ithout changing the location of the hoist. Scrapers, operating from overhead cables, also arc used in this form of mining.

During the last few years the combination of widespread unemployment and the ever- increasing price of gold has started a depres­sion gold rush th at has taken m any thou­sands of men and women into regions where placer mining once was profitable, with the idea of nAking at least a living by mining gold with pick, shovel and gold pan in the old-fashioned way.

Estim ates of the gold th a t has been mined by these am ateurs vary widely. I t is said that 12,000 of them who w’orked an average of three m onths in northern California took about $500,000 worth of gold from the old placers—an average of a little less than fifty cents a day. But, no m atter how low their daily earnings may have been, they have added something to the gold stock of the nation that will be guarded in the new Treas­ury vaults in Washington.

I t seems a long way from some lonely placer deposit in the wilderness to the Treas­u ry ’s concrete-and-steel vaults in W ashington. But gold is where you find it—and it is gold that is the foundation and safeguard of our m onetary system. T h a t’s why men sweat and suffer to win it from nature, th a t’s why the Government takes such elaborate precau­tions to guard its store.

USE COPPER TREATMENT TO CURE SICK TREES

T r e e diseases are cured by copper accord­ing to a report made at a meeting of the Botanical Society of America by Prof. W. E. Burge, of the University of Illinois. In some cases of anemia in animals and men, copper has been found beneficial. In the case of trees, Prof. Burge found, it m ay be equally effective in overcoming a lack of chlorophyll, the green coloring m atter, in the leaves. Tests were made on orange trees with unhealthy leaves. Doses of copper sulphate were scat­tered on the soil around the base of the trunk. Four months later, the trees had glossy green leaves. Other trees not treated w ith copper retained yellow leaves.

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SUPPRESSED KNOWLEDGE

OF THE AG Ef,

W h a t s tra n g e p o w e r* d id tHe a n c i­e n t* p o s te s t? W h e re w as th e so u rce o f kn o w le d g e tha t m a d e it p o ss ib le fo r th e m to p e r fo rm m ira c le s 7 W e r e th e se p ro fo u n d se c re ts b u rn e d w ith a n c ie n t lib ra r ie s , or a re th e y b u r ie d b e n e a th c ru m b lin g T e m p le w a ll* ?

Th e se w ise m on o f th e p e * t k new th e m y ste rre * o f l i fe , and p e rso n a l p o w e r. Th is w isd o m is not to s i,— if is w ith ho ld fro m the m ass, f t is o f fe r e d

f re e ly T O Y O U if w ith an o p e n m in d , yo u w ish to s te p out o f th e ru t o f m o no to no u* e x is te n c e ond M A S T E R Y O U R L IF E .

T H IS F K E S B O O KM a n ’s in to le ra n c e ha s a t tim e s sw e p t h is

a c h ie v e m e n ts fro m th e fa c e o f th e e a rth , y e t se­c r e t b ro th e rh o o d s h a ve p re se rv e d th is s a c re d w isd o m o f th e a g o * . Th e R o s ic ru c ia n s , o n e o f th e se a n c ie n t b ro th e rh o o d s . IN V IT E Y O U to *rrit9 a n d i&cure e f re e copy of th e " W is d o m o f the S a g e s ." It w ill p o in t o u t how yo u m oy r e c e iv e age-o/d tru fh s . Y o u ca n learn to MAKE Y O U R L IF E A N E W — th e fu lf illm e n t o f you# id e a fs a w a its y o u . A d d re s s :

Scribe T .D .D .R O S IC R U C IA N B R O T H E R H O O DSAN JOSE (AMORC) CALIFORNIA

CHEMISTRY | SUPPLIES

T h i n p r o f e s s i o n a l c h e m is t ' s w a s h b o t t le | Is n o w o n s p e c i a l s a l e , i S e n d m o n e y o r d e r o r I c h e c k a n d g e t t h i s b igvalue— POSTP AID.

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ACIDS MADE SAFELY BY HOME CHEMIST

(C ontinued from page 6 r)

be formed. Exposed to the sunlight, this precipitate of silver will change to a dark brown owing to decomposition.

An interesting experiment showing how heating m ay decompose a substance can be performed with some sal ammoniac (am ­monium chloride). Being produced when hydrochloric acid gas comes in contact with ammonia gas, it can be made to break apart again by applying heat.

To separate the two gases when they are set free, the home chemist m ast employ a filterlike wad of asbestos fibers or other non­

- f la m m a b le substance ramm ed into a glass tube to form a plug. Ammonium chloride then is inserted into the tube a t one side of the plug and the tube is mounted horizontally above the small flame of a gas burner.

IN A few seconds, the am m onium chloride will begin to decompose to form hydro­

chloric acid gas and ammonia gas. Being lighter than the hydrochloric acid gas, the ammonia will diffuse, spread, or travel faster and will issue from the open end of the tube nearest the porous plug. The presence of the gas can be shown by holding a moist strip of red litmus paper near the m outh of the tube until it turns blue. Similarly, the hydro­chloric acid gas will issue from the other end of the tube and will give evidence of its presence by coloring dam p blue litm us red.

In these experiments w ith acids, and in fact in any experiment where a chemical in a long tube must be heated evenly, the flame- spreading attachm ent shown in the photo­graph will form a valuable addition to your gas burner. If you made the burner pre­viously described (P.S.M., M ay ’33, p. 53) you will recall that the stack was made from a six-inch piece of three-eighths-inch iron pipe. To make a flame spreader, simply select a three-eighths-inch pipe cap, saw three slots across the top of the cap sixty degrees apart, drill holes at the ends of each slot, and finally screw the cap into place on threads cut in the upper end of the burner.

HOW METEORS AND COMETS TRAVEL(Continued from page 48)

locomotive's headlight. The rule is th at the tail always points away from the sun.

A simple experiment with a bar magnet and a small magnetic compass serves a double purpose in this connection. I t fixes the princi­ple in mind and actually illustrates how the rarified m atter in the comet’s tail is repelled by the sun’s light.

One of the illustrations shows why this is true. The repulsion of the com et’s tail by the sun’s light probably is an electrical effect similar in principle to the repulsion of the north pole of the compass needle by the south pole of the bar magnet. It has been dem onstrated, in fact, th at the sun itself is a m agnet; the sun-spots occurring in its northern hemisphere having an opposite mag­netic polarity to those occurring in its south­ern hemisphere.

Another outstanding point of interest about comets is tile manner in which they are captured and held prisoners by ihe large outlying planets of our solar system, partic­ularly by Jupiter.

The comet is captured because the a ttrac­tion of the. massive p lanet slows up the comet’s speed and changes its orbit from an open parabolic curve to a closed elliptical one.

That Ju p iter is efticent as a comet-catcher is evidenced by the fact that it has eighteen giant planets each of which was once a wandering and homeless comet.

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STRANGE THINGS PEOPLE COLLECT IN FOLLOWING THEIR HOBBIES

* (.Continued from page 43)

Joseph R. Kathrcne has erected at West M ilton, Ohio, a home for his collection—a library of a million items, newspaper clip­pings, advertisements, pictures, arranged al­phabetically, on all manner of subjects. He has been collecting them for fifty years, and calculates th a t if pinned together into a pen- ant, and flown from the mooring mast atop the Empire State building, they would stream out for tw enty miles.

I N TEX AS is a man who has made his col­lection into a house. Ross R. Wolfe gath­

ered petrified wood and fossils from seven­teen States and foreign countries. Of the run- of-the-m ill specimens, he built a house, in whose main room he installed the prize speci­mens. W ith left overs, he built a fence around the house.

Ingenuity is the keynote of many collec­tors, who have ransacked their brains for something different. A recent St. Louis show had an exhibit labeled “Articles Found in Boys’ Pockets on Wash Day.” Consider the Los Angeles man who saves wishbones. Not just ordinary w’ishbones; they must come from fowl that have been eaten by cele­brated men. Before Thanksgiving and C hrist­mas, he sends out many letters, and gets a surprising num ber of responses. W hen the late Representative Oliver W. Mitchell, of Missouri, died, he willed to his heirs his col­lection of letters of the alphabet, excepting only “ R ,” formed by twigs and branches, collected in many walking expeditions. On the same walks, a certain Englishman named Hanks would have collected spiderwebs, to be carefully preserved between two pieces of glass. A mechanic in Albany, N. Y., has m an­aged to accumulate one each of 166 different , kinds of cigarettes. Collectors of old and rare phonograph records have form ed a club at Bridgeport, Conn.

W hat distinguished gentleman do you sup­pose collects toy soldiers? None other than H. G. Wells, advocate of universal peace. So do thousands of other grown-ups, of whom 800 exhibited a t a recent Paris show. One Englishman has 10,000 soldiers. Like all the connoisseurs, he buys them unpainted, and colors them himself, w ith great attention to accuracy.

One man collects death w arrants for Salem witches, and A. W. Towne of Syracuse, N. Y., amasses data on Siamese twins. In the same city, Jam es Perkins treasures clippings and other inform ation about centenarians. Others find fascination in gloating over ac­cumulated doorknobs, m etal-plated baby shoes, glass hats, comic valentines, rooster­shaped dishes, old pipe stoppers, toothpicks, m ilk-bottle tops and baggage labels. A New York broker, M ark Haas, has 28,000 m atch­boxes and labels, for which he paid from two cents to $500. M any save cigar bands, and one such once asked Calvin Coolidge for an addition to his collection. The President took a cigar from a full box, removed the band, handed it to the collector, and carefully re­placed the cigar in the box— which he closed, firmly.

JOEL V. BARBER, of New York, saves decoy ducks. He exhibited them at a re­

cent show at a departm ent store. Earl Smith, of Pasadena, Calif., has 2,000 different car­tridges. They were exhibited recently beside 300 varieties of snakes, collected by an am a­teur. Lord W alter Rothschild, of the great banking house, collected albino animals and birds. He had fifty specimens, including a white robin and a white woodchuck. At a re­cent Chicago show, some one exhibited 750 types of golf tees.

Recently collectors have become busy sav­

ing beer and whisky labels. Repeal has given a great fillip to collecting bottles, of whic a leading exemplar is Joseh C. Auchincolsi president of the National Better Business Bu reau. One man in Elizabeth City, N. C., wi have only whisky bottles that have bee thrown overboard from ships. M any vahi bottles, especially flasks, that have been Ion exposed to the sun and turned a beautiful vie let shade. A form er cowpuncher, in ill healt from w-ar service, made a living searching Cal ifornia deserts and old deserted camps fo such bottles, selling them for $5 or $ 10.

ALL sorts of glass a ttrac t collectors, am some connoisseurs specialize on glass fror

windows of churches, monasteries, or othe old buildings. One bit, scarcely tw o inche square, brought nearly $ 100,000 and a dia mond-shaped pane with three figures, $25, 000. The most valuable glass was made be fore 1550, but is very fragile. Wrorld Wa destruction rather glutted the m arket fo glass fragments, and incidentally, made pos sible another collection recently exhibited home-made portraits and tapestries of saint and other sacred figures, given, often by peas ants, to churches throughout Central Europi and recovered from their ruins.

Minerals have enthused Thom as A. Smith of California, since he began collecting then four years ago at the age of seventy-six. Al his life, Smith was a citrus grower. Now hi has just finished making an amazing stom table. The top, 181/> by 28 inches is inlai( with cut and polished stones, no two alike The center is of South African tiger-eye bloodstone from Death Valley, m ottled Ari­zona jasper, Mexican malachite, and Arabiar azurite. The rest of the top is made of 31J pieces from other sections of the world, don| crazy-quilt style.

For years, Mrs. Gustine Courson Weaver of Texas, has been traveling about the work w ith her husband. W herever she went, shl picked up interesting dolls, in costume. Friend* even strangers, sent her more. T oday Mr* Weaver has -100 in the costumes of fifty coun­tries.

M aurice Blumenthal’s collection of 1 ,00| pairs of cuff buttons, is the pride of Brooki lyn, N. Y. Blumenthal also saves a*ll trays, watch chains, earrings—all of stonci not metal. This is his relaxation from lar«w scale excavating, such as digging *subwayi Once, beneath the Vanderbilt Hotel, New York, he struck gold.

Pictures of fairies arc collected by Dr Thaddeus P. H yatt, chief dentist of t ll ( M etropolitan Life Insurance office in Nf\| York. He has 200 of them.

ON E of the most remarkable and cosily' jewelry collections is the 1,000 clocks mitt

watches of M ajor Paul M. Chamberlain u( Newark, N. J. Towering above the rest Ift interest and antiquity , is a clock dated 1.17.$ I t is of wrought iron, made on the anvil, nmi has only an hour hand, for minute hands ill not come in until 3 700, and is driven Itjf weights with a fall of six feet for twttlvf hours. A remarkable Japanese clock, about 1760, has a hand that stands still while iHf dial revolves, m arking day and night in ii| periods each. Four times a year the clock I* adjusted to the length of the day, and sti'iluf; nine, eight, seven, six, five and four Imlta bu t not three, two, and one, for those in* sacred temple-bell strokes. There are watcli«fc that tell sun time as well as mean time, tnUM cal watches that play tunes, watches in M* shells and walnuts, and an electric watch ru$ by a battery carried in the pocket, made It1 Geneva about 1880. The same man mail# w atch containing (C ontinued on page m l

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OIL BURNER BUSINESS STARTED IN DESERT

(C o n tin u ed fro m page 1 1 2 )

cleaner hooked in reverse in fro n t of the stove, n a tu ra lly , w ould overcom e th a t difficulty. B u t th a t, of course, began to get in to the upper-price b rack e ts . T h ere were p len ty o f expensive o il-bu rners on the m ark e t. T h is , to be a success, m ust be cheap.

A couple o f lengths of stove-p ipe on to p of the chim ney took th e place of the m echanical d ra ft , and the B ey ers’ B u rn er was ready to go on sale.

T h ro u g h o u t th a t firs t w in ter, the ran ch ­e r m an u fac tu red th e b u rn e r in his w o rk ­shop and m ade his own insta lla tions. Satisfied cu stom ers did his advertis ing . T he business grew.

N ow the castings arc m ade in q u a n tity a t a c ity fo u n d ry and— well, if th ey are a lread y selling in A laska, business m ust be p re tty good. B e tte r, anyw ay, than paying y our b ro k er fo r the priv ilege of grow ing pears .— F. D.. M ojave, Calif.

EARTHQUAKE OPENED UP NEW BUSINESS FOR HIM

AcC O N S U L T ­IN G geolo­g ist Jiving

in S o u th ern C ali­fo rn ia found h im ­self w ith little o r no funds, and w ith ­ou t a job , ab o u t the tim e o f the L ong Beach e a r th ­quake of M arch 10th , 1933. H em anaged, how ever,

to get a tem p o ra ry jo b on one o f the v a rio u s com m issions w hich inv estig a ted the causes o f the ea rth q u ak e and its effect on bu ild ing co n struction .

T h is job did n o t last v ery long and the m an in question found h im self once m ore unem ployed, b u t he had learned som e­th ing and had g o tten an idea. H e had d iscovered th a t th e g rea t m a jo r ity of people in the e a rth q u ak e a rea w ere crassly ig n oran t of th e scientific causes of e a r th ­quakes and he got the idea of p resen ting the m eans o f understand ing th e fu n d a ­m en ta ls of th e science of seism ology th ro u g h som e sim ple, yet w orkable se is­m ograph w hich could be easily e rected a lm ost anyw here and w hich w ould cost bu t a nom inal sum to build and keep up.

H e realized th a t he was tack ling a big job , due to th e fa c t th a t th e re was only one seism ograph on th e m ark e t and th a t p a r tic u la r m achine cost in the n e ighbor­hood of $500.00. F u rth e rm o re , it to o k an expert to op era te it. H e sp en t six m on ths in in tensive in- (C o n tin u e d on page 114)

W h e r e D o Y o u G o

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The late depression turned business topsy­tu rvy and now the “ New Deal”— the rebuild­ing period— stares you in the face.

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The whole tren d today—legislation— spirit—action —is to pu t men back to work, raise earning and spend­ing power, give every m a n a f a i r chance to w o rk out h is ow n sa lva tio n .

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Different—because business men arc older and wiser—because th e c rash of 1929 proved m any old business m ethods were unsound.

No employer today would dare risk an im portant post in the hands of a man who had not learned the lesson of 1929. W hy should he, when right a t this moment he can pick and choose and get alm ost any man he w ants a t his own price?

Business organizations are rebuilding—reorganizing for the new conditions. Before it is over, every man and every m ethod will be judged in the cold light of reason and experience—then dropped, rem ade or re­tained. This spells real opportunity for the man who can meet the te st— b u t heaven help the man who still tries to meet today 's problems from yesterday 's standpoint! O ut of the m ultitude still jobless there are sure to be m any frantically eager to prove him wrong and take his place.

S o m e M e n H a v e F o u n d t h e A n s w e rSeeing these danger signs, m any aggressive men and women are quietly training a t home—are wisely building them selves for more efficient service to their employers.

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Our answer is to point to a file of letters from thousands o f our studen ts reporting p a y r a is e s a n d p ro m o tio n s w h ile b u s in e ss w a s at i ls low est ebb—to­gether with a m yriad of others telling of greater suc­cess during these recent m onths of recovery.

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D R E M E L M F G . C O .D ept. 1 1 0 , R a c in e , W is.

BIG MONEY!T HI S QUI C K S E L L I N G H E A T E R yYou'll find big profits falling: fn

your lap—lotting yonr friends Beethis marvelous SUNSHINE RADIANTneater. Every homo a hot prospect. Gives clean, Jivo praa heat no niat- terwhereyoulivoforl J-ican hour. No aenricin*r; no installation—no in­vestm ent nor stock. You col lect profit a in advance. Thousands in usel

days. W rite quick _ __ ___ni^ke te rr ito ry reservationa.

P S u n s h in e P r o . C o . , Dept. 5111 S 127 W. 65th St., C h ic a g o , fell.

T H E K E Y T O L I F E

Ro s i c r u c i a n M y s t e r i e sF R E E In t r o d u c t o r y Bo o k— e xp lo in s the p ro c t ic o l, u s e fu l, m o dern te o ch in g s o f th e R o s i- c ru c io n s. 1 N o n - R e lig io u s ) D ig n ifie d , u p lift in g , m e n to l ond m eto- pbys’ico l p r in c ip le s e a s i ly u se d to o ve rc o m e M e ’ s o b s ta c le s . W r ite fo r F R E E bo o b , " T h e W isd o m o f th e S a g e s / ’ ond le a rn how to re c e iv e th is k n o w le d g e . A d d re s s : S c r ib e L. R . N .

R O S IC R U C IA N BR O TH ERH O O DS o n J o s e (AMORC) C a l ifo r n ia

E L E C T R I C I T Y — T A L K I N G P I C T U R E S B R O A D C A S T I N G S p e c ia l L im it e d o f fe r !

GOOD JOBS WON BY TRA IN ED MENR. R. coach fare allowed to L.A. Earn living while learning. 30.000 graduates. Latest fac ilities. No dummy equipment. Free employment service. Est. 29 yrs. Send for FR EE illu stra ted Catalog. Tells how to earn good pay.

NATIONAL RADIO & ELECTRICAL SCHOOL Dept. PSR -10. 4006 S. Figueroa Los Angeles. Calif.

Be a n A R T I S TM A K E $ 5 0 TO $ 1 0 0 A W E EK !Our sim ple, proven m ethods make it easy to learn Commercial Art, Cartooning and Designing quickly, AT HO M E, in spare tim e. New low rate. Big new book/'A RT for P leasu re a n d Profit ', sent free . S tate ag e .

WASHINGTON SC H O O L O F ART Stu d io 1 3 1 0 , 1 1 1 5 IS t h S t. W ash .. D . C .

BE INDEPENDENTDon’t worry about your position or your fu­tu re . Assure yourself of aB teady. p e m a - T\ei\t Inconac. Become an exoert pYmtujr'a- pher. W onderful money-making opportuni­tie s—full or spare time —enjoyable occupa-

phy. Earn while learning-New York Institute of Photography

Founded 1010 10 West 33 Street, (Oept. 5) New York City

SUCCEED WITH YOUR PRODUCTS

Make — Sel l t h e m . L e a r n how. Formulas . Processes . Analyt ica l

j Service. Catalog free.H. Thax ly C o . , W ash ington , D. C .

Always mention P o p u l a r S c i e n c e

M o n t h l y when answering adver­tisem en ts in this magazine.1 / iP T n D P D i n 7 a p >0 >p^la<' S

K I T A

a m iniature model of a cup yacht. I t is marked P in the following list. This kit is for the October model of the m onth, described on page 71.

All our kits are accompanied by instructions or blueprints. The ship mtfdel kits contain only the raw materials. The furniture kits, however, are completely machined and prac­tically ready to assemble.

A . Whaling Ship model Wanderer, 20V2->n-hull ................................................................... $6.90

A A . Same with hull lifts sawed............ 7.40D. Spanish galleon, 24-in...................... 6.45D D . Same with hull blocks shaped 6.95E . Battleship U.S.S. Texas, 3-ft 6.95E E . Same with hull lifts sawed 7.45F . Liner S.S. Manhattan, 12-in............. 1.00G. Elizabethan galleon Revenge, 25-in... 6.75 G G . Same with hull blocks shaped 7.2 5H . Cruiser U.S.S. Indianapolis, 12-in..... 1.50J . Clipper ship Sea Witch, 13-in.......... 1.50L. Farragut’s flagship Hartford, a steam-

and-sail sloop-of-war, 33^4-in. hull............ 7.95L L . Same with hull lifts sawed 8.4 5M . Aircraft carrier Saratoga, 18-in...... 1.00N. Four U. S. destroyers, each 6>4-*n.........7 5O. Liner S. S. St. Louis, 11-in............. 1.00P. Cup yacht 7J^-in. decorative water-line

model ................................................................ .7 5N ° . 2 . Solid mahogany tray-top table 23

in. high with a 15 in. diameter top. Ready toassemble, but without finishes..................... 5.40

N o . 4. Solid mahogany book trough 22 in. long, 9 1/ in. wide, and 2% in. high over all.Ready to assemble, with finishes................. 5.30

N o . 5. Solid rock maple hanging wall rack with one drawer, 19^4 in. wide, 33% in. high.Ready to assemble and stain included 5.75

N o . 6 . Solid rock maple butterfly table, top 19 by 22 in., height 22]/2 in. Ready to assembleand stain included ......................................... 6.90

N o . 7. Veneering kit with selected veneers, crossbanding material, inlays, tape, glue, veneer saw, and book of instructions, for veneering a coffee table, serving tray, mirror frame, book- rack, and jewel box......................................... 7.75

P o p u la r Science H o m ecraft G uild,381 F o u rth A venue, New Y ork, N. Y.Please send me K it............................................forwhich I inclose S (or send C. O. D. D)

Name .

Address..

City...................... ...................... State...................(Please print name very clearly.)

Note: Prices of all kit.s except F, II, J , M, N, O, and P are 50 cents higher west of the Mis­sissippi River because of heavy shipping charges. We prepay the postage on both cash orders and C. O. D. orders, but if you order C. O. D. you will have to pay on delivery the extra charges made by the Post Office, which amount to 28 cents. Kits F, H, / , M, N , O, and / ’ cannot be sent C. O. D. This offer is made only in the United States.

“ E d W il s o n , there, is one of the most ambitioira men in the plant. I notice that he never fools away his spare time. He studies his International Corre­spondence Schools course every chance he gets.

“ I t ’s been the making of him too. He hasn’t been here nearly so long as Tom Downey, who was laid off yesterday, but he knows ten times as much about this business.

“ I ’m go in g to g iv e him Tom’s job a t a ra is e in sa la ry . He’s the k in d of man we w a n t a ro u n d h e re .”

now do you s tand in your shop or office? Aro you an Ed W ilson or a Tom Downey 1 A re you going up? Or dow nt

No m atte r whero you live, the In te rn atio n al Corre­spondence .Schools w ill como to you. No m atter w hat your handicaps o r how sm all your m eans, we have a plan to meet your circum stances. No m atter how lim ited your previous education, the sim ply w ritten , wonderfully illu s ­tra ted I. C. S. textbooks m ako i t easy to learn.

Th is is a ll we a sk : W ith o u t cost, w ithout ob lig a tin g yourself in any way, p u t i t up to us to prove how we can he lp you. Ju s t m ark and m ail tliia coupon.

IN TER N A TIO N A L C O RRESPO N D EN C E SCHOOLS

“ The U niversal U niversity” Box 7615-H, Scranton, Penna.W ithout cost or ob ligation , pleaso Bond me a copy of

your booklet. “ W ho W ins and W hy,” and fu ll p a rticu la rs about the sub ject before which 1 have m arked X :

T E C H N IC A L A N D IN D U S T R IA L C O U R S E S D Architect D Bridge EngineerD Architectural D raftsm an □ Autom obile Work□ 1)wilding E s t im a t in g □ P lu m b in g □ S te am F i t t in g□ W 'ood M ill w o rk in g D H e a tin g □ V eu tila tio n□ C o n tr a c to r a n d B u ild e r □ A ir C o n d itio n in g□ S tr u c tu ra l D ra f ts m a n □ S a n ita ry E n g in e e r□ S tr u c tu ra l E n g in e e r □ .Sheet M e ta l W o rk er□ E le c tr ic a l E n g in e e r □ S te am E n g in ee r□ E le c tr ic L ig h tin g □ M arin o E n g in e e r□ W elding , E le c tr ic a n d G an □ R efrig e ra tio nD T e le g ra p h E n g in e e r □ U . H . L ocom otives□ T e le p h o n e W o rk □ R . I t . S ectio n F o re m a nO In v e n tin g a n d P a te n t in g □ R . R . B rid g e a n d B u ild in g□ M ec h an ica l E n g in e e r F o re m a n □ A ir B ra k e a□ M ec h an ica l D r a f ts m a n D R. R. S ig n a lm a n□ P a t te rn m a k e r □ M a c h in is t □ P h a rm a c y□ R e a d in g S h o p B lu e p rin t* □ C h e m is try□ H e a t T r e a tm e n t of M e ta ls □ C oal M in in g E n g in e e r□ C iv il E n g in e e r □ N a v ig a tio n □ A g r ic u ltu re□ H ig h w a y E n g in e e rin g □ T e x tile O v e rse e r o r S u p t.□ S u rv e y in g a n d M a p p in g □ C o tto n M a n u fa c tu rin g□ G a s E n g in e s □ T o o lm a k e r □ W oolen M a n u fa c tu rin g□ D iesel E n g in e s □ F r u i t G ro w in g □ R a d io□ A v ia tio n E n g in e s □ P o u ltry F a rm in g

B U S IN E S S T R A I N I N G C O U R S E S□ B u sin ess M an a g em en t. □ A d v e rtis in g□ In d u s tr ia l M a n a g e m e n t □ B u sin e ss C o rre sp o n d en ceD T ra ffic M a n a g e m e n t □ L e tte r in g Show C ard s□ C o s t A c c o u n ta n t □ S te n o g ra p h y a n d T y p in g□ A c c o u n ta n c y a n d □ E ng lish CD S igns

C .P .A . C o a c h in g □ C iv il S e rv ice□ B o o k k eep in g □ R a ilw ay M a il C le rk□ S e c re ta r ia l W o rk □ M ail C a rr ie r□ S p an ish □ F re n c h □ G ra d e School S u b je c ts□ S a le sm a n sh ip □ H ig h Schoo l S u b je c ts□ W a llp a p e r D e c o ra tin g □ C o llege P re p a ra to ry

S a le sm a n sh ip □ F ir s t Y e a r C ollege□ S erv ice S ta t io n S a le sm a n sh ip □ I l lu s t ra t in g □ C a rto o n in g

Name.............................................................. Age.......................Street Address.............................................................................City...................................................... State..............................Occupation.................................. .................................... ............................

I f you reside in Canada, send th is coupon to the In ternational Correspondence Schools Canadian, L im ited ,

M ontreal, Canada.

L E A R N A T H O M EA re you adult, a lert, ambitious,willing to study? Investigate L A W ! W e guide you step by step— fum ish all t exts, including 14-volum e Law Libra­ry. T rain ing prepared by leading law professors and given by members of bar. Degree of LL . B. conferred. Low cost, easy term s. Send N O W for Free,64-page“ Law Trainingfor Leadership.”LaSalle Extension University, Dept. 1083-L, Chicago

, 0 e 4 - o b e r 1 \ 0 C)

“ THERE’S ONE MANW E 'R E GO IN G TO K E E P ”

WONDERFUL NEW INVENTIOSOLDERING IRON AND BLOW TORCH IN ONE

Pays for itself in one job! Needs no pump or pressure system —no stove—no char­coal— no separate blow torch. Burns an hour at less than V\ cent for gasoline.A G E N T S* O FFERWrite for Special Offer toagents. The Justrite is an Ideal proposi­tion for either main line or side line — full time or spare time,

J U S T R I T E M F G . C O . ,2 0 5 7 Sou thport A venu e,

C h ica go , III.

GetlntotheToyBusinessA S O U R M A N U F A C T U R E REarn money casting our NEW LIN K o f hollow Soldi?rs, 5 ami 10c A u­tomobiles, A shtrays, ctc. No spccial place or experience necessary as wo furn ish full Instructions w ith moulds

l i ami cooperate in se lling , also buy ” finished goods. Chaneo of a lifv-

w > ‘/ y s i i i \ i tim e for man w ith small capital to —U K I \ »’ get in to th is new and profitable in-

dusiry . If you mean business and are over 21. w rite at oitio fo rrie ta lis as C H R ISTM A S R U S H is now Martials.

M E T A L C A S T P R O D U C T S C O .D e p t . E . 1 6 9 6 B o s t o n R o a d , N e w Y o r k , N . V .

m i n d Po w e r ,

A FREE BOO KD e v e lo p y o u r p e rs o n a l , c r e a t iv e p o w o r! A w a k e n '

♦He s ile n t s le e p in g fo r c e s in y o u r o w n c o n sc io u s- ' n o ss . B e c o m e M a t t e r o f y o u r o w n l i f e . P ush a s id e ’

a ll o b s ta c le s w ith «i n o w e n e r g y yo u h a v e o v e r- ' lo o k e d . T h e R O S I C R U C I A N S kno w h o w . a n d w ill 1

h e lp y o u a p p ly th e g r e a t e s t o f a ll p o w e rs in m a n s > c o n t r o l. G re a t© h e a lth a n d a b u n d a n c e fo r y o u r s e l f . '

W r i t e fo r F R E E b o o k , " T h e W is d o m o f th e S a g o s It 1 te lls h o w y o u m a y r e c e iv e th o se te a c h in g s fo r s tu d y a n d "

u se . I t m o a n s th e d a w n o f a n e w d a y fo r y o u . A d d r e s s , '

S c r / b e Q -Z. K .

R O S IC R U C IA N B R O T H E R H O O DS a n J o s e ( A M O R C ) C a l i f o r n ia

i HOURK A R -N lf refin ’tshos a n y color a u to m o ­bile easily , q u ick ly an d econom ically w ithout polishing, waxing, rubbing or painting.J U S T W I P E I T O N W I T H A C L O T H IMagic-like fluid covers old puint with tough, ela/rtfc Coat. A b so lu te ly tra n s p a re n t , s e i f - loveling. pelf-polishing. G u a ra n te e d . Lfcots 8 to 12 months. Equal in beauty to repaint job coating $25 to $75. W rite for f r e e S am ble to prove our claims and Territory offer. K A r-N U C O . ,D e p t.C l 5 1 , O akley Sta* .C in c in n a ti, O .

Advanced Writers of SongsU sed a n d p u b lic a t io n se c u r e d . S en d us any l ik e ly m a te r ia l (W o r d s o r M u s ic ) fo r c o n s id e r a tio n to d a y . R ad io M u sic G u ild , 1 6 5 0 B r o a d w a y , N ew Y ork . ______ ___

1 0 0 % I m p r o v e m e n t G u a r a n t e e dWe build, strengthen the vocal organs —

,— ------1—•-by fundamentallytikn t exurcistx . .

can now have the voice you w ant. No lite rature sen t to anyone under 17 unless signed by parent. P E R F E C T V O IC E IN S T IT U T E . Studio 1 3 -6 8

3 0 8 N o . M ichigan A v e ., C h icago

m

E a s y F o r A n y o n e . Ju s t p repare bed, plant our spaw n, keep moist and give short simplo attention os O U k DIRECTIONS TELL HOW. Grow in cel- lar. basem ent, shed or unused space. Easily IN ­EXPENSIVELY done. liaise large SNOW WHITE, m eaty, delicious, REAL food value mushrooms. Begin with smafl bed, THEN EXPAND—fill ail space with beds in tie rs .

RNIGHT CRO PS! Year around production. ASSURED MAR \ Fascinating. PROFITABLE fnll time, or pastime occupation

•ndid HOME BUSINESS enterprise. Details free. W rite today I N T E R S T A T E M U S H R O O M I N D U S T R I E S

>7357 C o tta g e G rove , C hlcag

PLAYGROUND BALL MADE FROM OLD INNER TUBE

T in sn ip s are used to cu t long s tr ip s from th e inner tube fo r w ind ing a p layground ba ll

A BALL of the indoor or playground type may be made from rubber bands cut

with tin snips from a section of an autom o­bile inner tube. First cut a disk from the tube as large as practical, then follow around the edge as shown. A cover, cut from scrap or salvaged leather and sewed with linen thread, will prolong the life of the ball and add to its appearance.

A core of another material, such as a hol­low' ball of celluloid, paper, or even a hollow rubber ball, will help to give size w ithout un­due weight.— C h a r l e s M. R ic e .

CHEAP UNIVERSAL JOINT HOLDS TELESCOPE

f l a s h - l i g h t

FIX TU R E FOR BICYCLE

C L A M P FOR ELEVATION

V

Sm all te lescope m ounted b y m eans o f an inex­pensive flash -ligh t clam p sold fo r b icyc les

MU CH has been written about homemade contrivances for m ounting the small tel­

escopes of am ateur astronomers and I have labored for hours w ith these mechanisms, but an investm ent of 35 cents finally solved the problem for me. I bought an ordinary bicycle flash-light clamp, which is easily attached to the telescope and can be fastened to any con­venient pipe. For my own use I have found that clothes-poles are as convenient supports as anything.—N o r t o n S. L o v e .

ANNEALING HACK-SAW BLADES AND FILES

H a c k - s a w blades, files, and other pieces of tool steel can be annealed dead soft by the home craftsm an in the following m an n er: Obtain a piece of ^ - in . or larger scrap pipe about IS in. long. Thread both ends and ob­tain a pipe cap for each end. Insert the pieces, screw the caps on by hand, and throw the pipe into the furnace. Allow it to reach a red heat and remain so for about tw o h o u rs; then remove and bury it immediately in ashes or lime until cold. Steel annealed in this m anner does not scale or burn, and can be filed or cut w ith cold chisels easily. Hack-saw blades can be bent double and hammered flat w ithout breaking. Tem per can be restored in the usual manner.— H . R. S.

W H A Twill you be doing one

year from today?T h r e e hundred and sixty-five days from now — w hat ?

W ill you still be struggling along in the sam e old job a t the same old sa la ry — w o r­ried about the fu tu re — never quite able to m ake both ends m eet?

You recognize of course we are liv ing in a New D ay — the New Deal is a reality ! A re you w aiting , w o n dering— just hoping?

D on’t do it, man-— don’t do it.Choose the w ork you like best in the

fist below, m ark an X beside it, and w ith ­out cost or obligation, at least get the full story of w ha t the I. C. S. C an do fo r you.

IN TER N A TIO N A L C .IR S E SP C N O E N C ir SC H O O LS

‘‘The Universal U niversity” Box 7618-JJ, Scranton, Penna.W ithout cost or obliKation, p lease send me a copy of

your booklet, “ Who W ins and W hy,” and fu ll p a rticu la rs about the subject before which I havo m arked X :

T E C H N IC A L AND IN D U STR IA L COURSESD Architect □ Bridge Engineer□ A rchitectural D raftsm an □ Automobile W ork□ Building E stim ating P Plumbing □ Steam F ittin g□ Wood M illworking □ H eating p V entilation□ C ontractor and Builder □ Air Conditioning□ Structural D raftsm an O Sanitary Engineer□ Structural Engineer □ Sheet M etal W orker□ Electrical Engineer □ Steani Engineer□ Electric Lighting □ M arine Engineer□ Welding. E lectric and Gas □ Refrigeration□ Telegraph Engineer □ It. R. Locomotives□ Telephone W ork □ R. R. Section Forem anD Inventing and Paten ting □ R . It. Bridge and Building□ M echanical Engineer Forem an □ Air B rakes□ M echanical D raftsm an □ R . It. Signalm an□ P atte rnm aker □ M achinist □ Pharm acy□ Reading Shop Blueprint* □ Chem istry□ ITeat T rea tm en t of M etals □ Coal M ining E ngineer□ Civil Engineer □ N avigation □ Agriculture□ Highway Engineering □ Textile O verseer or Supt.□ Surveying and M apping □ C otton M anufacturing□ Gas Engines Q Toolm aker D Woolen M anufacturing□ Diesel Engines □ F ru it G row ing Q R adio□ Aviation Engines □ P oultry Farm ing

BU SIN ESS TB A IN IN G COURSES□ Business M anagem ent □ Advertising□ Industrial M anagem ent □ Business CorrespondenceD Traffic M anagem ent □ Lettering Show Cards□ Cost A ccountant □ Stenography and TypingD A ccountancy a ad D English D Signs

C.P.A. Coaching □ Civil Service□ Bookkeeping □ Railway M ail Clerk□ Secretarial W ork □ Mail Carrier□ Spanish □ French □ Grade School SubjectsO Salesm anship D School S ubjerts□ W allpaper D ecorating D College P repara to ry

Salesm anship f l F irst Y ear College□ Service Station Salesm anship C Illustra ting □ Cartooning

N am e........................................................ , A ge................................S tree t A ddress............................................................................................

C ity ................................................................ S ta te ....................................Occupation...................................................................................................

I f von reside in Canada, send th is coupon to the In ternational Correspondence Schools Canadian , L im ite d 0

M ontreal, Canada

L E A R N A T H O M EA re you adult, alert, ambitious,willing to study? Investigate L A W ! W e guide you step by step— furnish all texts, including 14-volume Law Libra­ry. T rain ing prepared by leading law professors and given by members of bar. Degree of LL . B. conferred. Low cost, easy term s. Send N O W for Free,64-page“ Law TrainingforLeadership.”LaSalle Extension University, Dept. 1183-1, Chicago

H o w T o S e c u re AGovernment Position

W hy w orry ab o u t s tr ik es , layoffs, hard tim es? T r a in n o w f o r a G o v e r n m e n t j o b . M any exam inations expected . In ­c reased sa la rie s , s teady w ork, trave l, good pay . Open to citizens 18 to60. L et m e help you become a Railw ay Postal C lerk, l 'o s t Office C lerk, C ity Mail C a rrie r. R ural C arrie r,—or help you g e t in to any o th e r G overnm ent job you w an t. 1 w as a S ecre ta ry Kxani- in e ro f Civil Serv ice Com mission fo r S years. H ave helped thousands.N„w P R P P My 32-page book tells O W T K L t B l)o u t G m . . t j o bs an(]

how IIhHl p toqualify you to got one. Send the A. R . PA TTER SO N , Civil S e rv ice Exp ert,PA TTER SO N SC H O O L. 1 6 1 2 C a se B ld g ., R o ch e ste r . N. Y .

P lease send me. without obligation, your free book. "H ow to Secure a Government P osition ."

m in d Po w e r ,

A FREE BOO KD e v e lo p y o u r p e rs o n a l , c r e a t i v e p o w e r ! A w a k e n ’

t b e s ile n t s le e p in g fo r c e * in y o u r o w n c o n s c io u s ­

n e s s . B e c o m e M a s t e r o f y o u r o w n l i f e . Push a s id e a ll o b s ta c le s w ith a n e w e n e r g y y o u h a v e o v e r ­

lo o k e d . T h e R O S I C R U C I A N S kno w h o w . a n d w ilM h e lp y o u a p p ly th e g r e a t e s t o f a ll p o w e rs in m a n ’ s \

c o n t r o l. C r e a t e h e a lth a n d a b u n d a n c e fo r y o u r s e l f . \ W r i t e fo r F R E E b o o k , " T h e W is d o m o f th e S a g e s " I t l

te lls ho w y o u m a y r e c e iv e th e s e te a c h in g s fo r s tu d y a n d ' u se . It m o a n j tb e d a w n o f a n e w d a y fo r y o u . A d d r e s s , 1

S crib e C .K . K.

R O S IC R U C IA N B R O T H E R H O O DS a n J o s e ( A M O R C ) C a l i f o r n ia

M A K E M O N E YH om e !

I^ARN steady income each week, working a t home, -J coloring photos and miniatures in oil. Learn famous "Koehne M ethod” i n few weeks. Work done by thia

method in big demand. N o experience nor a rt talent needed. M any become independent thia way. Send fop tree booklet. "M ake Money a t Home.”

N A TIO N A L A R T SCHOO L. In c.3 6 0 1 M ic h ig a n A v e n u e , D e p t . 1 3 6 9 , C h ic a g o , I l l in o i s .

USED CORRESPONDENCE COURSES

AND EDUCATIONAL BOOKS OF ALL KINDS B O U G H T AND S O L D . IF YOU HAVE A USED HOME STUDY COURSE YOU WISH TO SELL FOR C A S H OR IF YOU WISH TO BUY ONE ON A N Y SUBJECT, W R I T E FOR F R E E DET AI L S TO:

BYRN’S EDUCATIONAL SERVICED e p t .S - 3 , B o x 2 1 8 7 , C le v e la n d , O h io .

m o H i n a i aF o r T r a in e d A u t o M e ch a n ics

Step into R ig Pay. E arn $35 to $75 a week. 1 tra in you in only S weeks at largest schools of kind in world. New practical shop plan. Learn with real tools . . . on real equipm ent. W rite today for Rift Free Opportunity Rook and Special Low Tuition Offer. Ad­dress school nearest you.

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Founded X910 10 West 33 Street. (Dept. 5) New York City

V ourA r t A b i l i t yThere is a m ark e t fo r a r t ta le n t. T es t and classify your ab ility w ith booklet "C hoose The Rijrhc K e y .”Our com m ercial a r t d irec to rs give you th e ir im partia l opinion. Dollar brings book, or w rite fo r deta ils .

D e p a r t m e n t A D e s M o in e s Io w a

A rt Su per v iso r s Bu r ea u

S ecre ts o f SuccessHE TURNED SCULPTOR

(C o n tin u ed fro m page 118)

spectacle of a huge head of T heodore R oosevelt, m odeled in cem ent, high on the cliff. T h e c ity fa th e rs w ere im pressed by the unique idea b u t stroked th e ir chins as th ey pondered o ver th e p robab le cost. B ut th e in trep id d eco ra to r was as p ra c ­tical as he was a rtis tic . All th a t was needed, he explained, was a few tons of c em en t; he w ould n o t even requ ire any special tools. H is en thusiasm won the day.

W ith only th ree tools— an axe, a p ick ­axe, and a p iece of tin w ith w hich to m odel— he s ta r te d to w ork, w ith his young son as a helper. As though by m agic, the rugged fe a tu res of th e g rea t rough rider took form . People cam e from n ear and fa r to see th e s trange perfo rm an ce . In fo u r days th e w ork was finished. T he councilm en w ere de lighted . T h e citizens cam e,ad m ired , and le f t behind them to k en s of th e ir ap p rec ia tio n in th e fo rm of vo lun­ta ry cash co n trib u tio n s . T h e resourcefu l d eco ra to r found h im self w ith m oney in his pocket fo r th e first tim e in m onths. B ut he was n o t th rough .

O th er beach tow ns have since signed c o n tra c ts fo r th e m odeling of likenesses of n a tiona l heroes on m o un ta insides and bluffs. Since his first v en tu re he has no t been d ependen t on v o lu n ta ry contribu tions. H e now receives su b s tan tia l fees from the m u n ic ipalities and is once m ore happily empl oyed. — Mapl ewood, C alif.

IT STARTED FROM DUSTD I L L was trudg- ^ ing along a ho t, d u s ty road on his w ay to the so f t­ball d iam ond on th e edge of C anon C ity , C olorado. As th e cars s tream ed by, huge clouds of d u st choked him and a lm ost b linded him . B u t Bill was too busy th ink ingto com plain . H e w as th ink ing ab o u t th a t d u sty road. T he wr ^ th e r h ad been h o t and d ry ; th e pop- ..n ty of th e soft-ball p a rk was caus>- a s tead y increase in traffic. To ma<ce m a tte rs worse, th ere was a w a te r shortage w hich m ade sp rin ­kling im practica l.

An idea w as struggling in to shape in B ill’s m ind. H e had ta lked , th a t v e ry day, w ith ira te re sid en ts along the road , who w ere “ fed u p ” w ith th e a lm ost unb earab le condition . Oiling th e road w ould cost at least five th o u san d do lla rs a m ile, acco rd ­ing to th e highw ay d e p a r tm e n t’s figures. T h a t was no t in th e cards. B u t w hy should the cost be so h igh?

M ate ria ls— th a t w as th e catch . W hy co u ld n ’t som e cheap su b s titu te be used? Bill jum ped fo r ( C ontinued on page 120)

J . E . Sm ith President

I h ave Doubled

and Tripled / Salaries /

[N a tio n a l Ka<li lllH litlltC

M any of M y M enMake *40$60 *75a W e e k

U roadcastlng S ta ­tions employ tra in ed men continually for jobs paying up to

i.OOO a year.

I Will Train You at Home to Fill a GOOD Job in RADIO

Send for my book of information on the opportunities in Itadio. I t's F R E E . M ail the coupon now. Get the facts on your opportunities in th is field w ith a fu ture. N .H .I. tra in ing fits you tor Jobs m aking. selling, servicing se ts ; to have your own business: to operate on board ships, in a broadcasting or com­m ercial Radio s ta tio n : for television, aviation, police R adio and many other branches. My F R E E book gives you full inform ation on R adio 's many I'ppot-r uni t ie-; Tor success anil how you can quickly learn at home to be a Radio Expert.

M a n y R a d io E x p e r t s M ake $ 4 0 , $ 6 0 , $ 7 5

a W eekW hy strugg le along in a dull job

w ith low pay and no fu ture? S tart tra in in g now for the live-wire Radio field. I have doubled and trip led salaries. F ifteen years ago there were only a few hundred $40. $00. $75 a week jobs. Now there are thousands.

M an y M a k e $ 5 , $ 1 0 , $ 1 5 a W e e k E x t ra A lm o st

a t O n ceHold your job. I 'l l not only tra in

you in a few hours of your spare tim e a week, but the day you enroll i ’ll send you instructions, which you should m aster quickly, for dotng 28 neighborhood R adio jobs. I will give you R adio Equipm ent for conducting experim ents and making tests that teach you to build and service prac­tically every type of receiving set made. F red J. Dubuque. 19 Church S t., Oswego. N. Y.. wrote: "1 have made about. $1200 in a lit tle over two years’ spare tim e Radio work."

A C T N O W , G e t m y B o o k - - F R E E

My book has shown hundreds of men how to make more money and win success. I t 's F R E E to any am­bitious person over 15 years of age. Investigate. F in d out what Radio o ffers: about my Course; what others who have taken It arc doing and m aking, about tny Money B ark Agreement, and the many other N .R .I. features. M ail the coupon for your copy R IG H T NOW.

J . E . S M I T H , P r e s i d e n t D e p t. 4 N P 3

N atio n a l R a d io In s t itu te W a s h in g to n , D. C .

, )■ E. S m ith . P residen t,I National Rad io Institute.

Dept. 4 N P3 .

Spare tim e set servicing pays m any N .R .I. men $5. $10. $15 a week extra. Full tim e men make as much as $10, $«0. $75 a

week.

Loud sneaker sys­tems insta lla tion and service work is another growing, money m aking field for Radio tra in ed

men.

Television the com­ing field of many great opportunities is covered by my

tra in in g .

I A d d re s s ........................................................................I■ C ity :...rr........................................................S tate _ !

D E C E M B E R , 1934 < S C v C W C ^ f t OX/CHi V Vq 119

FOR A P ER M A N EN T PROFITABLE BUSINESS o f y o u r o w n 'foee

to s a v e you?' tim e

MAKE $ 3 0 TO $ 4 0 A WEEKO ur free p lans show you how to build a successful business of your own sharpeniiiK lawnmowers on the ID E A L Lawn- mower Sharpener. 1’oMtively no experience ncee^ary . .Most men average from $.10 to S40 a week. .1. IS. Van Dicn. Kidgewood. X. .1 . w rites: "Som e weeks I earned $10 a week u l th my Ideal ju st as a side l in e ." H. Greenlnu. h'ond du Lae, W is.. w rites: “ In May I sharpened over 200 mowers at $1 each ." N iles C. Kaee. Rochester, N . V.. w rite s : “ 1 have sharpened 785 mowers at ?1 each.”

THE IDEAL L A W N M O W E R S H A R P E N E RMakes old. dull lawnm uwrrscU tlikn new . Mowers run easier. *tay*harp lonjrer—custom ers come bark year a f te r year. S tart riirht at. home. At- tach the Ideal to your lamp socket. £-W/Sharpens any make o( mower in 16 n fU» 2<» m h v n le * . A t u c l im e n ta fo r \ 'grinding sk ates . *rraxs shears, h»*dife Wbheftrs, sickles, scythes, axes, etc. i .B ZsM itz M y&feSw

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S3S Bell St.. Plymouth. Ohio FO R those readers who have ad­vanced beyond our simplified ship models, we have six construction kits for larger and more elaborate mod­

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These are the finest of the many m scale models Capt. E. Armitage Mc­Cann has designed for this maga- Hzine. Their value, when finished, is from twenty-five to several hundred H Pdollars each, according to the w ork­manship. Each of them requires a ,v num ber of different kinds of hard- -Ato-get materials. If you go out shop- - iping for the individual items your- self, you will waste a t least half a day's time and will have to buy much largerquantities than you have any need for. Besides, you will probably have totake some substi- / . jV — r-r;'"1'tutes that will be -J -.j \ _harder to w ork w ith JjV'and will not give as - r —f ~TT ~ / P Vgood results m the V finished model.

The kits contain "!y i —_ \only the raw mate­rials. but everything is of the best and is exactly suited to the iparticular model in &.■which it is to be used. The strips of wood, for example, i f e 'are cut to the cor­rect width and thick­ness-—in itself a con­siderable task. Wire, rigging cord, brass, fiber, celluloid, chain, tub ­ing, and the like are all of the right size andquality.

Note in the following list that all but one

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ty, otherwise it is a distinct in tim e to have this work ti you, especially as the ch«|J nominal one. In the <a«M Swallow, which is the small model in this classification* kits contain sawed-out lni|i

The easiest of our model*]! are those designed by ll

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are beautiful little water-llflj els, made of balsa w o o d ,l be put together with no nlM

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The simplified ship model kits fnrlfjj

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These wise men of the past knew Ihe m ysteries o M ife and personal power. This wisdom is not lo st, — it is withheld from the mass. (J M an ’s intolerance has at times swept his achievements from the face of the earth, yet secret broth, erhoods have preserved this Sacred w is­dom of the ages. It is offered freely T O Y O U , if with an open mind you wish lo step out of the rut of monotonous ex ist­ence, and M aster Your L ife .

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L IF E A N E W .A d d ress : Scribe C .S .G .

R osicruciaiis- A M O R C -

SAN JOSE, GYLIFORNIA

#

A lw ays mention P o p u l a r S c i e n c e M o n t h l y when answering adver­tisem ents in this magazine.

R F W A R n • • WE PAY u p T 0 $ 2 5 0 0 .0 0 M M TW F0R OLD COINS

L iberty H ead N ickels w orth ur> to $200.00 , each; Dimes $325.00: H alf Dollars $500.00; (S ilver Dollars $2500.00; H a lf C ents $200.00;

\a r p e C ents $2000.00; U nc Lincoln Head Pennies $2.00; Indian Head Pennies $51.00.

Send 10c T O D A Y fo r our buying catalog of all U nited S ta te s coins, w hich lists the prices we pay.D e p t . A G 2 . C O N T I N E N T A L C O IN C O . , In c o r p o r a te d 111 VV. J a c k s o n B lv d . C h ic a g o , I I I .

PLANES TH A T GO STRAIGHT UI( Continued from page 15)

come to earth w ithout crashing in event of engine failure, such craft never will be widely used.

The suggestions for attain ing this end have been many. They range from having a col­lapsible balloon, which can be filled from a tank of compressed hydrogen in an emergency, to folding window-blind wings that the pilot can open by means of a lever. M ost inventors, a t present, are working along the line of vari- able-pitch propellers. These lifting screws could be shifted from a positive to a slightly negative angle during the descent. Thus the wind would turn them like the blades of a windmill and check the drop. In addition, just before reaching the ground, the pilot could shift the blades'back to their most effec­tive lifting angle and their m omentum would produce an upw ard thrust th a t would slow the machine down before landing.

A VARIATION of this scheme is proposed by a young American inventor. He plans

lo have a gyroscope in the machine to keep it level in the air. In a descent, the heavy wheel of the gyroscope «'ould be spun by the whirling blades and when the variable-angle screws were shifted back to their lifting posi­tion, the gyroscope would give them added m omentum.

Of course, such proposals do not answer the problem of engine failure close to the ground. They are applicable only during a considerable descent to become effective. H ow ­ever, im provem ent in the landing gear, so it will absorb greater shocks, m ay take care of this problem. T he experimental w ork w ith the autogiro has accomplished much in this direc­tion. T he modern machine of this type can touch earth w ithout damage when it is drop­ping twelve feet a second. And, it is the shock of impact and not the fall th a t does the damage.

In the early nineteen-twenties, there was another burst of activity in the helicopter world. In 1921, the M arquis de Pescara, an Argentine of Italian descent, rode a tw in- propeller craft into the air a t Barcelona. I t was equipped with a small body like a racing car, the engine and radiator being in front and the two screws, revolving a t 200 revolutions a minute, overhead. Two years later, a t Issy- les-Moulineaux, France, he set a world’s record w ith a flight of approxim ately half a mile. On Ju ly 21 of th a t year, he achieved the first circle ever flown w ith a helicopter.

DU R I N G th a t sam e y e a r , E tie n n e Oehmichen, in France, and D r. George

de Bothczat, in America, also made helicopter history. Oehmichen, in a machine w ith four lifting air screws and a num ber o f auxiliary propellers, won a prize of 90,000 francs by fly­ing over a circular course of nearly a mile.

In America, the U. S. Arm y financed the experiments of De Bothezat. His giant ap­paratus, measuring sixty-five feet from tip to tip, was shaped like a huge Maltese cross. I t had a six-bladed lifting screw, tw enty-six and a half feet across, a t each of the four outer points. T he fram ework, formed by a maze of tubing and wire, brought the weight of the craft up to 3,400 pounds. Yet, when it was tested at M cCook Field, D ayton, Ohio, the apparatus not only lifted its own weight but1,000 pounds besides. I ts balance in the air w as so steady th a t in one flight it lifted three m en hanging from three of the four points of the frame. A hundred times, it ascended from the field and landed again w ithout accident. T he craft, on one occasion, was clocked a t th irty miles an hour in a flight across the field.

Although De Kothezat’s helicopter was one of the most successful tested, it flew only in

perfect calms, and its provision fi the pitch of the blades to provi descents in case of engine failure w;

The progress made in vertical f! 1923 encouraged the British Air offer a $250,000 prize for a heli could pass four tests. The winning rise vertically to 2,000 feet and de: ing w ithout damage. I t must clin feet, hover over a given area for h; descend and land w ithout damage test was a flight a t 2,000 feet ove mile course a t a speed of sixty mi F or the final test, it had to descen feet w ith the engine dead and lam of 100-foot radius.

ALL over the world, a weird arm turtles,” “sky windmills” £

tunnels” were reported as being ; carry off the prize. But the time 1 competition came and went with fulfilling the requirements.

However, the Air M inistry has its interest in developing a machiru vertical flight. In 1925, Louis Brci English naval inventor, was subsid government in experiments with design. The machine is reported to1,000 pounds and to have hovere spot for fifteen minutes.

Four years later, in 1929, anothi the Isacco Helicogyre, was built tally under the auspices of the Air ] had a single huge lifting screw will m otors a t each end equipped w propellers th a t pulled around the lif A somewhat similar idea is incorpoi Curtis-Bleecker helicopter, a $250, m ental craft produced a couple ol in America. Each of its four lifting a propeller in fron t to keep the aeri turning.

Two o ther machines, one in Ital} in Belgium, have m arked furthei recently.

W ith tw in blades spinning in opp tions on a central mast, the D ’A« copter hovered and circled aboil air-field near Rome for more I minutes, early in 1931. Lighter machines of the kind, it weighs pounds and has a ninety-five 1 motor. Smaller propellers a t the ( of the framework aid in directinj and in maintaining balance.

The Belgian craft, designed by i named Florian, is lifted by a pair i four-foot screws, w ith a stubby uu* peller spinning between them. I landing gear consists of four shock bumpers shaped like elephant hoi higher than the surround building chine hovered aloft for almost ten ll

A t the present time, a number ol are reported working upon the Idr bining a helicopter and a rocket, (1 to have the lifting screws propelled I another, and more daring one, is It craft shot upw ard to a desired In projectile. Then, when forward ti ceases, vanes, folded into the sidii ii jeetile, open out and, propelled by a m otor, carry the machine along an k j

In the search for the goal of VM noblemen, mechanics, famous lnvi» known tinkerers, and noted scien|l» grappled with the problem. They millions of dollars and patents III record their ideas. Yet, so far, only partial success has been their riiw»f

I t is no wonder, then, that mi'll world are awaiting eagerly the In trials of the English machine.

f c w W S c ‘ c t

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ELECTRICAL ENGINEERING—A G r e a t Industry with a G r e a t FutureThe n e w I. C. S. Course in E lec­trical Engineering covers this ia scin a tin g field thoroughly. If you are just starting or are on the w a y to a real payin g p osi­tion in this industry, this course brings tho k n ow led ge n ecessary for advancem ent.

MECHANICAL ENGINEERING— A F i e l d w i t h a F u t u r e

This I. C. S . C ourse h a s m eant advancem ent to hundreds of am bitious m echanics, drafts­m en, blacksm iths, foundrymen, p a tte rn m a k e r s , a p p r e n t ic e s , and m echanical engineers. You, too, w ill find that enrolling for an I. C. S. Course is an invest­ment in a B igger Future. U se th e couponS

AUTOMOBILE EXPERTSa r e a l w a y s in d e m a n dThe rapid progress in m anufac­ture and service of the m od em autom obile brings n e w oppor­tunities to thousands of am bi­tious and forward-looking m There's a lw a y s a dem and trained men. The n ew I. C A utom obile Course w ill m ake you a trained m anl The time to act is now . U se the coupon.

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I- 1 Electrical Engineering I~1 M echanical Engineering

□ A rchitecture ~l D rafting □ A ccountino .1 ] Concrete Construction iG ood English□ Reading Shop B lueprints JS a lesm an sh ip

Civil Engineering G as Engine Operating RadioR efrigerationChem istryHighway Engineering P ou ltry Farm ing

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Inventing and Patenting Aviation Engines

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No guess-w ork about your ge ttin g proper tra in in g a t LINCOLN . Only modem, high class t ra in in g planes w ith Departm ent of Commerce approval are used. T m i n i tig g i rcn fu r G o v e r n m e n t l ic e n s e as T ransport.L im ited Commercial. P riva te or Am ateur P ilot. Ground and mechanics school with experienced instructors qualify you as M aster A irp lane and Engine Mechanic. 21 years' experience as successful mechanics trade school :14 years'successfully teaching aviation.

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IF ONE DOOR IS CLOSED, TRY ANOTHER

OT TO W E IS T was in a tough spot. Prolonged illness, which drained his

resources, coupled w ith the loss of his job pu t O tto p re tty m uch up against it finan­cially when he finally did get his health back. A good w atch repairer by trade, he was able to get a little work from among his friends bu t it d idn’t am ount to much. And there was no use moving to another town. He w ouldn’t be known and, so far as w atch repairing was concerned, condi­tions were ju s t as bad elsewhere.

But W eist hadn’t made w atch repairing his only vocational interest. M ore as an am usem ent than anything else, he had taken a course in photo-engraving and as he acquired skill became quite proficient at it. This was all before bad luck walked in his fron t door. Now, faced w ith the necessity of making a living by some other trade than th a t of a watchmaker, he started thinking about his hobby.

There were no t m any engraving plants in N orth D akota. Newspapers were using a few cuts but not as m any as they would like, because of the length of time it took to make them. W hy not try to encourage (he papers to dress up their pages pic- torially? thought W eist. Bismarck, the capital, where W eist was located, was the biggest source of news in the State, and just a t this time a fiery political contro­versy was raging. News! And pictures would make it th a t much more interesting.

By hard scraping, W eist got together enough money to buy equipm ent and set it up in his apartm ent. N ext he took out a card in the d istrict union. Then he started looking for business. The results were surprising. N ot only were the news­papers interested but prin ters and adver­tisers, too. They found his work to be of high quality, thanks to the patience, care and precision th a t w atch repairing had taufiht him.

He still carries on the w atch repair work bu t today it is photo engraving that is giving him the bulk of his income.— B.K., Bismarck, N . D.

THUMB INDEX INDIGATES LOCAL PHONE NUMBERS

M UCH time can be saved in finding local telephone numbers in a directory th at

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The Secret Know ledge of a Lost RaceChoked into stillness by the rising waters were the words o f wisdom o f a vast forgotten peo­ple. M ajestic structures once stood where now is naught but the ocean’s roar. By what mysterious means d id the survivors reach Egypt’s shore? W hat magnificenc wisdom did they bring as their heritage?Before death sealed their lips they imparted t o secret B rotherhoods their knowledge.The Pyramid stands as silent testimony to their

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POISON MURDERS SOLVED BY TEST-TUBE SLEUTHS

(C ontinued from page 1 3 )

W hat Secret Power

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are paralyzed in the voluntary and respiratory muscles. The heart continues to beat, but breathing through the skin is difficult. The same paralysis is noted in man and other warm-blooded animals.

Curare comcs from the Strycknos family of plants, as does strychnine (Strychnos nux vomica). However, strychnine is a tetanus- producing drug, causing violent muscular con­vulsions. A strychnine victim ’s body is arched in a bow while tremors ripple the muscles. Curare, on the other hand, produces quite the opposite effect, paralyzing the muscles.

ST R Y C H N IN E itself was used in the 1933 “ poison-picnic” m urder in Arkansas. It

was administered in grape juice and, strange­ly enough, the beverage was taken by the four victims w ithout their noticing anything unu­sual about it. Strychnine is extremely bitter, one part in 70,000 parts of water being dis­tinctly noticeable.

A man, his wife, and two of their children were killed in this case by an attorney who feared the father was going to “squeal” on him in connection w ith a shady case. A third child lived and told of seeing the attorney “put something” in the grape juice. The “some­thing” turned out, under qualitative tests, to be strychnine.

Poisons fall into distinct chemical classifica­tions. Acids and alkalies form the first group. Among the former are such substances as sul­phuric and hydrochloric acid. Among the lat­ter are caustic potash and ammonia, with others. The metallic poisons like lead, silver, mercury, copper, arsenic and thallium salts are in a second group. Thallium sulphate was the poison fatal to five members of a New York family in M ay of this year. In this case, chemical analysis revealed the poison in cocoa used by the family. The gaseous poisons form another group and include the familiar car­bon monoxide, five tenths of one percent of which in stagnant air can prove fatal. This means th a t in a garage of 200 cubic feet, one cubic foot o f carbon monoxide would be fa­tal. Other gaseous poisons include hydrocyanic or prussic acid, chlorine, and others.

Hydrocyanic acid is sw ift in its action, one to two and one half grains being sufficient to cause death. I t evaporates quickly, and a mere whiff of the fumes can bring death w ith dram atic quickness—but not with the speed m ystery-story writers claim. Like all other poisons, hydrocyanic acid has different ef­fects upon different persons and a Philadel­phia College investigator is on the alert for the complications th a t often arise as a result.

A M AN could swallow hydrocyanic acid and, in the few seconds before death en­

sued, toss the bottle out the window, walk U. a chair, and sit down. The odor of bitter al­monds or peach blossoms, so stressed in mys­tery stories, would indicate the acid as the cause of death, but only the trained investi­gator would consider suicide when no bottle was found in the room. He would make a search outside the room, a t least.

Nicotine, conine (which is the poison hem­lock swallowed by Socrates), alcohol, ether, chloroform, formaldehyde, and allied com­pounds fall into a fourth group of volatile organic poisons. A miscellaneous group would include nitrobenzene, phenol (carbolic acid), and the aniline dyes, among others.

Substances seldom classed as poisons by the public, such as alcohol, chloroform, and am ­monia, are included in the toxicologist’s cate­gory, for anything capable of being taken into a living organism and causing by its own ac­tion impairment of the organism's function is a poison.

For this reason, the culture of septic-pneu-

monia bacteria used in the Indian case was classed as a poison. An interesting side light on that particular m urder is the fact that the con­spirators, who sought the victim's death so that his estate might be inherited by them, tried first to kill him with tetanus bacilli which were rubbed on the bridge of his spectacles.

POISONS in the several groups act in three ways. They are irritants, blood poisons, or

nerve poisons. Pain, vomiting, and purging are produced by the irritants. In the blood poisons, the circulation is affected directly, the red corpuscles are destroyed, or the drug has a peculiar action on the coloring matter or decomposition products ot the blood. The nerve poisons include the narcotics or stupefy­ing drugs, those producing delirium, and those causing convulsions.

The scientific investigator knows the prob­able effect of each poison through experiment and experience and can identify them a t the autopsy and later check in the laboratory. Tests on the lower animals help. Frogs are quite useful in determining the effects of poi­sons. The poison is injected into a frog’s lym­phatic gland and the heartbeats, respiration, and voluntary and involuntary movements are studied.

The examination of bloodstains plays an im portant part in scientific crime detection. While distinct from the forensic analysis of poisons, tests to reveal whether a blood spot is animal or human, or even to prove that it is blood at all, are often vital factors in the prosecutor’s case.

M any factors enter into the study of blood­stains— the material on which they are found, their age, and the condition of the material to which the blood adheres. Blood will form a compound with iron oxide, for instance, if found on rusty iron. Greasy cloth makes a bloodstain look like any other discoloration, The composition of bricks or plaster must be considered.

If there is a quantity of fresh blood, as in a pool, it can be tested for grouping— that is, compared with the four types of human blood and its animal or human origin determined. Or it can be placed under the microscope and the red and white corpuscles, which differ in humans and animals, identified.

If a stain is blood, there is a positive test th a t will reveal it as such. After the stain has been soaked off the cloth, wood, or other ma­terial holding it, chemicals are added to the solution and, if it is blood, the haemoglobin in it will crystallize into haematin crystals. These are readily identified under the micro­scope as chocolate brown needles, usually four-sided.

O E V E R A L chemicals, benzidenc, ortho-toli- dine, guaiacum, and phenolphthalein, turn

definite colors when hydrogen peroxide is added to them in the presence of a solution containing a trace of blood. All but the phe­nolphthalein become a beautiful blue color, while this exception turns red. These tests arc so responsive that they reveal blood when it is present in only one part to 500,000 parts of solution.

The precipitin test makes use of serum from a rabbit which has been immunized against the type of blood to be tested. This is used to distinguish different kinds of blood. A rab­bit immunized with chicken’s blood will pro­duce a serum that will react only when in con­tact w ith chicken's blood. If immunized with human blood, the serum is the proper reagent for only human blood. The investigator tests many kinds of prepared serums, in tubes con taining blood solution. The right one liber­ates the coloring m atter of the blood, while the others do not.

SYMPHONY ORCHESTRAS FOR EVERYBODY(C ontinued from page 3 7 )

l o r the most part, we played waltzes, polkas, and schottishes, for ours was

»nt(tly a dance orchestra and our favorite Mentions came from a bright red book la­beled, “Gems Of The Ballroom.’’ But we were jiwhelle’s only orchestra. Today, my home­town high school boasts an orchestra of fifty jhilMcians who can and do play the classics al- llmiinh they do not feel above light operas. ’I lie development of worth-while orchestra |*Tfnrmances is even better illustrated by Ot- uw a 's story.> That little Illinois corn-belt city had the junior of acting as host to the 1934 National illljli School Orchestra Contest because, away i»»ik in 1920, a young fellow named C. R. I'l'ucock had come out of the East to serve as jmliljc-school basket-ball and track coach, as- iMnnl football coach, Boy Scout executive, Mllmlor of boys’ and girls’ glee clubs—and iii'utor of a high-school band and orchestra.

|)KACOCK had found no band in O ttaw a’s ¥ schools. Nine bungling youngsters were the j|H<('lcus of the orchestra. Peacock called a feeding of public-school music lovers; assem- iiliHl twenty boys and girls who wanted to

Btl n ; persuaded their parents to purchase in- ;jit unents; arranged his raw pupils into string, ■ood-wind, brass, and percussion sections, and T^rnt into action. His method of teaching was ilmiacteristic of that now followed in so many bublic schools. He started from scratch and |fj>l on going.I ''Each violin player,” he began, “ must hold pH violin in his left hand with the chin rest in liis left collar bone, as I do. He must hold lie violin bow in his right hand, four fingers

lu tin g on top of the grip, the thum b nestling ffcrftcath it and in front of the frog—just like Pill*. Always keep your bow at right angles to

tlic finger board. You can do this by bending IjroUr wrist, keeping it always flexible—so. ■ *'luis you are less liable to make squeaky pounds. W atch yourself in a m irror until your Btffect position becomes a habit.”

The cello players were shown how to play a sitting position, the cello resting against

1! knees, the player’s head to the right of the Us. The string-bass players were taught to nnd behind their bull fiddles, the left leg

nrvvard, bracing the instrument. The wood- Ind or reed-instrument players were given liulamental instructions. The drummers were

Instructed in handling sticks and calfskins.1 Then Peacock started each section on some iliriple tunes and exercises. Members of each uvtion competed for the “first chair” or sec- «on leadership. Each section became a jury, fjrtiding by raising hands which member was IIh* most able player. Finally^all the sections

IWrrc brought together. The Ottawa High hi liool Orchestra became a reality.

BY 1934, Peacock was conducting a sym­phony orchestra of more than a hundred

liltfji-school students; his boys’ band of nearly leventy pieces had been taken over and fi- nuiiced by the city ; he had aided in establish- lIlK a Civic Orchestra, as well as a good or­chestra in each of O ttaw a’s Sunday schools; lie had graduated dozens of players into the 01 lawa University Orchestra; and his high-

fwliool aggregation of symphonic players was Competing for the high-school championship of l,lli: United States. I t won first honors in its class.

Since music made by stringed instruments liu* always been the favorite of discerning in-

j lllviduals, it is not strange that, while drum I ftorps have throbbed and bands have boomed, fimr comparatively subdued and technically llrlicate orchestras began increasing in size, n k ill , and numbers, several years before the N.uional High School Band was first assem­bled hi 1926. Yet, (C ontinued on page 10 2 )

High School Coursein 2 Years

Y o u n e v e r h e a rd a n y o n e express re g re t a t h av in g a H ig h School e d u c a tio n — a n d y ou n ev e r w ill B u t m any , who railed to g e t th e ir tra in in g a t th e usua l tim e, d o n 't realize t h a t th e y can g e t i t by hom e s lu d y in th e ir sp a re tim e. A H ig h School e d u c a tio n is defin ite ly req u ired for—

C ollege Entrance and T eacher s Certificate T h e B etter P ositions in Business and Industry State and M unicipal License Examinations Ability to M eet O thers and Express Y our Ideas

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You Can Qualify for a Better PositionI f y o u a rc in te re s ted m business o r in d u s try , con ­s ider th e o p p o rtu n itie s fo r good p a y a n d s te a d y a d v a n ce ­m en t o f te r c ' to m en w ith th e p ro p er t ra in in g a n d th en m ak e u p yo u r m ind th a t y ou a re soon go ing to be h o ld ing o n e of those b e tte r positions. T h ro u g h h o m e s tu d y in y o u r sp a re tim e, we can tra in you in 2 to 3 y e a rs fo r y o u r choice of th e desirab le positio n s lis ted in th e coupon.

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Get Ready to Earn Big Money!T h is is y o u r b ig o p p o r tu n i ty to p u t p a r t o f y o u r sp a re tim e in to g e tt in g by hom e s tu d y th e tra in in g you know you need- If you d id n o t finish H igh School, here is yo u r ch an ce to do so. I f yo u n e v e r y e t h a v e h ad th e ch an ce to g e t specialized p rep a ra tio n for a d v a n ce m e n t in y o u r ch o sen lin e , s t a r t now to g iv e y o u rse lf t h a t tra in in g .

A sk ing fo r in fo rm a tio n invo lves n o o b liga tion — b u t m ailing th e coupon m a y m ark thn tu rn in g p o in t in y o u r life. C heck a n d m ail to d ay .

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SUPPRESSED KNOWLEDGE

OF THE AOEf^j

W h a t s tra n g e p o w e rs d id th e anc i* e n ts po sse ss? W h e r e w as th e so u rce o f kn o w le d g e th a t m a d e it po ss ib le fo r th e m to p e r fo rm m ira c le s ? W e re the se p ro fo u n d se c re ts b u rn e d w ith a n c ie n t l ib ra r ie s , or a re th e y b u rie d b e n e a th c ru m b lin g T e m p le w a lls ?

Th e se w ise m en o f th e p ast knew th e m y s te rie s o f l i fe , and p e rso n a l p o w e r. T h is w isdo m is no t lo s t ,— it is w ith he ld fro m the m ass. It is o f fe re d

f r e e ly T O Y O U if w ith an o pen m in d , y o u w ish to s te p out o f the ru t of m o no to no us e x is te n c e and M A S T E R Y O U R L IF E .

TH IS F R E E B O O KM a n ’ s in to le ra n c e has a t t im e s sw e p t h i*

a c h ie v e m e n ts fro m th e fa c e o f the e a rth , y e t se ­c r e t b ro th e rh o o d s h a ve p re se rv e d th is s a c re d w isd o m o f th e a g e s . Th e R o s ic ru c ia n s , o n e o f these ancient brotherhoods, INVITE YOU to w r ite a n d s e c u re a f re e c o p y o f th e " W is d o m o f th e S a g o s ." It w ill po in t o u t how yo u m oy re c e iv e a g e -o ld tru th s . Y o u ca n le a rn to M A K E Y O U R L IF E A N E W — th e fu lf illm e n t o f yo u r id e a ls a w a its y o u . A d d re s s : tgJ l f P l L ■ .. .if■

SCRIBE N .Z.H.ROSICRUCIAN BROTHERHOODSAN JOSE (AMORC) CALIFORNIA

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| N A M E ................................................................................. |

| A D D R ESS .................................................................................. I

NEW SUBSTANCES FOR ART AND INDUSTRY

(Continued, from page 1 1 1 )

them in caustic solutions for tw enty-three hours; they boiled them in water for seven hours; they sprayed them with gasoline, pounded them with hammers, exposed them to tide and salt spray, scrubbed them w ith strong alkali cleansers, and, finally, spun them 20,000 times in a machine filled w ith flying sand grains. In every test, their reports showed, the synthetic-resin paints and varnishes stood up better than similar coatings w ithout the plas­tic base.

Special types of plastic paints are m anu­factured for houses, boats, and bridges. One quick-drying varnish is made w ith an oil- soluble synthetic-resin base. I t is rubbed on furniture like lemon oil and perm itted to harden.

Another kind of synthetic-resin varnish protects arm atures on electric generators from in jury by oil, gasoline, or lubricating grease. Installations so protected range from giant armatures, twice as high as a man, to midget ones designed for small grinders.

Strangest of all applications of these var­nishes is one reported from an eastern m u­seum. T he skeletons of dinosaurs and other prehistoric monsters are being coated with the liquids. They have proved themselvefc best for protecting the remains of creatures representing life on earth hundreds of thou­sands of years ago.

Another new use for synthetic resins in the field of science is in holding metals for micro- analysis. The bits of m aterial to be examined are fixed in a block of hardened Bakelite. This gives them a solid support during the work of examination.

MED IC IN E , as well as metallurgy, is bene- fitting from applications of the new

plastics. A device made of a thermoplastic substance is replacing the familiar gauze masks worn by nurses and surgeons in the operating room. Oxygen tents for hospital patients now have transparent plastic windows. X -ray op­erators are protected by lead-filled Bakelite. Shields to protect vaccinations, and an ad­hesive tape which has a plastic base th at makes it unaffected by w ater, are other ap­plications. Also on the list is a new pro­tective helmet for miners, made possible by the use of light-weight plastics.

How much punishment the latest plastic substance will stand is illustrated by break­down tests made on a mechanical counter designed for use on high-speed factory ma­chines. At each revolution, a bronze pawl connected w ith a laminated-plastic ratchet wheel. For seventy days and seventy nights, the apparatus ran a t the rate of 516 impulses a minute, a total of 49,000,000 impacts on the wheel. A t the end of that time, it was the bronze pawl, and not the wheel, th at gave out. Engineers who examined the wheel reported it was good for another 50,000,000 im pacts!

N ot infrequently, the m anufacturers of plastic substances have to develop special formulas to meet the needs of a particular product. For example, when broadcasts from electrical recordings came into wide-spread use, one of the largest producers of the rec­ords appealed for a new material that would eliminate squeaks. The engineers and chem­ists of a plastics laboratory immediately set to work. They solved the problem, develop­ing an entirely new material.

M ost of the thousands of new uses for plas­tics have been found in the last decade. The greater num ber of synthetic substances now making industrial history have been born since the W orlrl W ar. The field is new. But it is a field of spectacular accomplishments, of amazing possibilities. I t represents a crown­ing achievement of the industrial chemist.

GUS GIVES A LESSON IN CAREFUL DRIVING

(C ontinued from page 56 )

driving. You know the kind of a fellow mean. The bird who barges across a Win crossing because he thinks there’s not mm Ii chance that a car will be coming the olliof way; the dumb-bell who starts on a long dr ivi w ith poor brakes because he’s walling to Ink* a chance that he wron’t have to stop qiiitkj the fellow wrho cuts around a curve on ilia wrong side of the road, or passes another < nr when he can’t see w hat’s coming, because lm thinks there isn’t much chance of a car com* ing the other way—and that his luck will sav* him if there is.”

“I see the point there, all right,” Monlrn*| admitted. “I t ’s the gambler’s instinct veil should leave a t home when you go out in lltn car.”

“T h a t’s it, exactly,” said Gus. “ If you nrv*f gamble on w hat the other fellow is goittn III do, you’ll be ready for him no m atter wliul fool stun t he pulls.”

“Always seemed to me speeding causes a M of accidents, too,” M ontrose ventured.

t t r T pH A T all depends on wrhat you mean liy A speeding,” Gus replied. “ You can run 4

chance of landing in jail on a homicide clmrdf when you are driving only tw enty miles M- hour, and yet you may be as safe at twli that speed as you would be a t home in htt| I t all depends on the time and place.”

“How do you figure that o u t? ” Montn wanted to know. ™

“ Have you an hour to spare?” Gus “If you have, drive over with me to Carvlli while I do an errand, and I'll show you win I mean.”

M ontrose readily agreed, and the two in« _ climbed into Gus’s car.

“Now,” said Gus, as they turned ini 11 % wide state road, “ this stretch is over fuij miles long, with no sharp bends or concwil turns. There arc only two entering roads, In you can see a car coming on either of III nearly a quarter of a mile away. There'# 1 doubt but what this road is safe for for I miles an hour. Of course, there’s drivers Won' say it was safe for sixty, but there’s no Mill fying th at type. If you made the road fetillj safe for sixty, they’d w ant to do a hundred

“Of course,” Gus went on as the speed<»li»i ter needle crept up to forty, “ this spew I really safe only if the tires on your car Hi good, the steering gear is tight and in peel shape, and the brakes are right. On the oil hand, a fellow was nearly killed last yetlf this road because he was going too fast. I was only doing forty miles an hour, and I had the road all to himself, too.”

“W hat happened—a blow -out?” rose inquired.

“Nothing gave way on the car,” said UlHf “ He was blown off the road! You sec Him# were some icy spots on the concretc, hh enough to cause any trouble, ordinarily, lm there was a sixtv-mile gale blowing, quarU'tlti across the road, and as he hit an icy s|wil • extra hard blast started the car into a 'til th at ended out there in the field with a InlM spring and a damaged mudguard. I t surf wni lucky for him it happened right there n ilM than farther along where there’s a bank I Mi) have gone over.”

” D LOWN off the road by the wind I" M .claimed Montrose. “ I wouldn’t have l»

lieved it possible that wind pressure coulll ita anything like th at.”

“ I t did, just the same,” Gus mainlnlunt “and if you don’t believe that a 100-mllc tffc, hour breeze packs a punch, just get cailtflil i« one of those Kansas ‘twisters’ and see happens to you.”

“So the answer is to w'atch your step 11ft * windy day if there’s (Continued on pa\\v i l l J

! LIGHTHOUSE KEEPERS OF THE SKY

(Continued jrom page 1 5 )

Lfoke. A repair job at a machine shop would L*ve taken the station off the air for several ■mirs. B. H. Barker, the man at the radio, id some quick thinking. Fishing rubber bands pom his desk, he wound them around the key *1 that they took the place of the useless luring. W ith this makeshift repair, the ap- jpuratus kept going for several days until a few part arrived from the manufacturer.| In addition to the equipment a t the inter­mediate fields, the airways havre autom atic ■evolving beacons spaced fifteen miles apart, •flu airways mechanician services a 200-mile jjtctor, m aking regular trips to see that the jjiparatus is in good order. Each beacon holds |wo bulbs, the second slipping autom atically lito place if the first burns out. At some of ilic most isolated beacons, caretakers live near

Jlic towers and devote all their time to tend- « g the one light.

■ O N ELIEST of these mountain lighthouses is one on a jutting rock 6,860 feet above

■ a level a t Little Lake Pass, Nev.■^During w inter months, the only way to K t to and from the station is on snow- Bioes and the caretaker communicates w ith He outside world by means of fight signals. Ijsing a prearranged code, he flashes messages Bu the nearest other beacon, eighteen miles Siway, at Silver Zone, Nev.| On all the airways crossing the western Mountains, snowdrifts add tremendously to Mic w ork of the airways field men. Near R attlesnake Ridge, Wash., for instance, Wil­liam Graham and his helper had to burrow phrougb a th irty-foot drift to get into the fcower shed of an isolated beacon, f Then, when they started to leave, they (found the tunnel had caved in, jamming shut Hfie door of the shed. By removing the sash [from the window, they were able to dig their [way to open air. From outside the building, jiowever, they could not replace the sash. [$o they had to dig out the first tunnel again, Etcplace the window from inside the shed, and leave by the door.

I Because of the heavy snowfalls in the ^Rattlesnake Ridge region, the metal cabinets housing the switches and astronomical clocks

tire being placed th irty feet up on the towers -Instead of in their usual positions a t the base. ^Hiis saves hours of back-breaking digging during w inter months.£ Electrical storms, w ith their lightning flashes, always form a spectacular hazard for the airw ays men. Three or four years ago Charles Irish had a hair-raising experience with a thunderbolt a t the Amarillo station.

IT WAS early in July. About midnight, the storm broke over the field. Irish was just

reaching for the microphone to broadcast the weather when the whole room seemed filled with blue, running flames,

r A friend, who was driving down the road flt the time, told him later he saw a ball of lire run along the 125-foot antenna wires and down the lead wire into the radio shed. The bolt circled the room from one electrical ap­paratus to another, leaving Irish in the center Unharmed.

In complete darkness, with the air filled with acrid fumes, he groped for a flash light and found that every piece of apparatus in the building was out of order. Driving four miles through the storm, he reached a tele­phone and sent out an S.O.S. for a repair man With spare parts.

p In the work of an airways keeper, there is little fanfare or ballyhoo. The risks he meets Jtre part of his job. The emergencies he over- ■Comes are taken for granted. But, quietly, efficiently, he is playing his part in bringing greater safety to the sky.

The Diesel I Engineer Is Vour Job SafeJu st as the gasoline engine ch an g ed th e jo b s o f th o u sa n d s w lio d cp c n d e d on h o rse-d raw n ve­hicles fo r th e ir l iv in g — ju s t a s elec­t r ic i ty ch an g ed th e e n tire se t-u p in th e fields of l ig h t a n d p ow er— so now th e D iesel eng ine is f a s t in ­v ad in g bo th th e pow er and t ra n s ­p o r ta t io n fields, a n d th re a te n in g th e p re s e n t jo b s of th o u sa n d s .

What This New Field Offers Vou

Now is y o u r c h a n c e t o g e t in to a b ig n e w in d u s t ry an ti g lo w u p w ith i t t o a n im p o r ta n t po si­t io n . T o d a y th e re is p rac tica lly n o co m p e titio n in th e D iesel field, b u t th e in creasin g use of D iesel en g in es w ill re s u lt in k een co m ­p e ti t io n fo r jo b s in 3 to 5 y ears. B y s ta r t in g now to t ra in fo r this b ig n ew in d u s try , you can keep

OieseWhe Newest, Fastest-Growing Power G e t o u r F r e e D ie se l B o o k le tD ie se l e n s in e s a r e f a s t re p la c in g s te a m a n d K aso linc e n g in e s in p o w e r a n d find o u t w h a t th e D iesel field p la n ts , m o to r t ru c k s a n d busses, locom otives a n d sh ip s , a ir c ra f t, t ra c to r s , o ffers y o u — how easily y o u can d red g es , p u m p s, e tc .— o p en in g u p a n in creasin g n u m b e r o f w ell-p a id jo b s fo r o b ta in a co m p le te u n d e rs ta n d in g D iesel- tra in ed m en Y ou g e t c om ple te in fo rm a tio n on all th e l a te s t D iesel d e v e lo p of D iesel en g in e p rin c ip le s a n u m en t$— tw o- and fo u r-s tro k e cycles; low- and high-speed and h eav y d u ty ty p e s ; o p e ra t io n b y s p a re - tim e s tu d y D iesel-e lec tric g e n e ra tin g sy s tem s, e tc .— in o u r course . In c lu d e s a ll t e x t m a te r ia l—* a t hom e, W r ite TO D A Y to r lu ll w ith special d iag ra m s fo r q u ick u n d e rs ta n d in g of th is new pow er. in fo rm a tio n . N o o b liga tion .

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E a rn a R eg u lar M onthly S a lary YOU can become a F inger P rin t E x­p e r t a t hom e. In spare tim e. W rite fo r deta ils if 17 or over.

Institu te of Applied Sc ie n c e 1 9 2 0 Su nnyside Ave.

D ept. 1 3»68___________ Ch icago , III.

— M A N IN E A C H T O W N — ,To P la te A u to P a r t s , Reflectors, B athroom F ixtures, R efinish Beds, M irro rs, C hande­liers, by new m ethod; no cap ita l o r expe­rience required . S im ple p lan of m anufac ­tu ring a t hom e s ta r ts you in big m oney m ak ing business. O utfit furn ished. F ree p a rtic u la rs and proofs.G U N M E T A L CO. A ve. F , D e c a tu r , i l l .

SU P PR ES SE DK N O W L E D G E

O F TH E A G E S

r . wWhat strange powers did the

ancients possess? Where was the source of knowledge that made it possible for them Co perform mirac/es? Were these pro­found secrets burned with ancient libraries, or are they buried beneath crumbling Temple walls? These wise men of the past knew the mysteries of life, and personal power. This wisdom is not lost—it is withheld from the mass. It is offered freely TO YOU if, with

an open mind, you wish to step out of the rut of monotonous existence andM A S T E R V O U R LIFE.

T H I S E f t E E B O O KMan’s intolerance has at times swept his

achievements from the face of the earth, yet secret brotherhoods have preserved this sac*

i red wisdom of the ages. The Rosicrucians.one of these ancient brotherhoods, INVITE

; v YOU to write and secure a free copy of “The jj. Secret Heritage.” It will point out how you ^ may receive age-old truths. Y'ou can learn | to MAKE YOUR LIFE ANEW—the r| fulfillment of your ideals awaits J you. Address:| Scribe A . D . P ,

%The R o s icru c ia n s§ — A M O R C — «i - S A N J O S E , C A L I F O R N I A 'V The Ronlcrcucliinft are NOT a reUiflou* organization

* — a - ~ -j* . - . a - .

M A K E M O N E YH o m e f

TT’A RN steady income each week, working a t home.J co loring p h o to s a n d m in ia tu re s in oil. L ea rn tam oua

“ K o eh n e M e th o d ” iu few w eeks. W o rk d o n e b y th is m e th o d In b ig d em an d . N o p rev io u s ex p erien ce n or a r t tra in in g needed . M a n y b eco m e in d ep e n d e n t th is w ay . S en d for free book let. ‘'M a k e M o n e y a t H o m e .”

N A T I O N A L A R T S C H O O L , In c .3601 Michigan Avenue Dept. 1368, Chicago, Illinois

D IE S E L EN GIN ESL o w e r P o w e r H ills 7 5 %

H o d i i r e F i r e H a z a r d s 1 OO%All W IT T E D iesel u sers rep o rt big savings and a lm ost unbelievable economy. Fuel cost p e r ho rsepow er only 2 cen ts p e r day. S tream line design. Cash or liberal te rm s.

Im m e d ia te d e liv e r y .5 and

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W IT T E D IE S E L -U T E PLANTS— A.C. o r D.C. cu rren t. F u rn ish E lec tric L igh t and P ow er fo r less th a n O N E C EN T per KILr- OW ATT. W rite fo r lite ra tu re .

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To { IfJb I

New Adding Machine F its V e st P o cket!Adda, sub tracts , and m ultip lies, like $300 machine— yet i t costs only $2.95. W eighs only -3 ounces. Not a toy—guaranteed workmanship. P erfectly accurate, l ig h t­ning fast. Sells on sigh t to business men. storekeepers, homes— all who use figures.W rite sS a m p le O f f e r n n d M o n ­e y - M a k in g P la n . 100^ I*rofit !

C. M. C lea ry , D ep t. 37 , 303 W . M onroe SI.,ChicaQ O

A lw a y s m en tio n P o p u l a r S c i e n c e

M o n t h l y w h e n a n sw e r in g a d v e r ­

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M a k e v a s e s , la m p s , b e a u t i f u l a r t o b je c t s

NEW L I QUI D FR O S TFrost-a-lac transform s old bottles, jars, F ’l I N a n r lcans, boxes, m irrors, m etalw are into beau- ■ V d l i utiful a r t objects in 20 m inutes. Use like or- P R O F I Tdinary paint . . . then watch frost designs ■ r l I I

appear as surface dries. Works on light bulbs, cellophane, etc . Make and sell bric-a-brac in

| Y | y \ Q | £ home shop. Send 35c fo r trial bottle or $1.00

W IT H P A IN T KEEN RICK CO.

MIDGET MOTORED MODELS RACE IN AIR AND WATER

(Continued from page 1 1 2 )

M orris designed and built a perfect little four- cylinder, four-cycle m otor which is only ten inches long and seven inches high. He spent more than a year in his back-yard workshop completing the engine. I t is made largely of aluminum alloy and has a bore and stroke of one and one sixteenth inches.

In designing and testing these midget racers, hobbyists are learning things which may prove of value when applied to larger craft. For in­stance, one California builder has discovered that a flat, horizontal fin, placed on the stru t back of the propeller, will end porpoising, or bucking, w ithout reducing speed.

Similarly, in the field of airplanes, gas m od­els are leading the way to new discoveries. In Kovel’s machine, the center of gravity is placed fifty percent back from the leading edge of the main wing, instead of th irty per­cent as in customary on most full-size ships. In addition, the area of the tail surface is in­creased to th irty percent that of the main wing. The result, tests have shown, is a stall- proof ship. Time and again, as the plane has lost speed in climbing too steeply, it has sim­ply floated downward in a gentle curve, in­stead of stalling and diving violently in the manner of the conventional airplane.

ONCE, a t Roosevelt Field, the model was only fifteen feet from the ground and

climbing steeply on the take-off when the en­gine cut out as the result of a clogged fuel line. Instead of diving into the ground, it sim­ply leveled off and slid to a normal landing. The innovation which has made Kovel's plane virtually foolproof could be applied to large machines as well.

Both in the sport of racing m iniature Miss Americas and in flying planes powered with real gasoline engines, enthusiasts are experi­menting w ith a thousand and one innovations. As a result, their hobby is turning into some­thing more than a sport packed w ith thrills and fun. I t is developing into a proving ground for new ideas, ideas that some day m ay be of far-reaching importance.

FIND CARBON MONOXIDE IN TOBACCO SMOKE

T h o s e who object to sitting in a smoke­laden atm osphere may find support from a re­cent experiment a t the U. S. Bureau of Mines, in which three research workers shut them ­selves up in an unventilated chamber and smoked sixty cigarettes, tw enty-four cigars, and an ounce of pipe tobacco. Their discom­fort was explained when air analyses showed the presence of both carbon dioxide and car­bon monoxide, and blood tests showed that the subjects absorbed as much of the latter, poisonous gas as would be the case in walking along a street congested with heavy traffic.

TOBACCO PLANTS SHOW SOIL DEFICIENCIES

Testing soil by growing tobacco plants in it, as a substitute for elaborate chemical analy­sis, is a possibility suggested by recent U. S. Departm ent of Agriculture experiments. Ab­sence of any one of nine essential elements for the growth of crops, the tests show, gives the broad, sensitive tobacco leaves a distinctive appearance. Shortage of nitrogen tinges the whole plant an abnormally light green color. A deficiency of phosphorus, on the other hand, gives it an extremely dark green hue. When calcium is missing, tips of young leaves form ­ing the bud take on a characteristic hooked appearance. Equally telltale signs denote a lack of potassium, magnesium, boron, sulphur, manganese, and iron.

T H E K E Y T O S E C R E T W IS D O M"L ike a bo lt from th e heavens, the word was spoken anti from th e reverberations o f its sacred syllables, cam e the creation o f the U n i v e r s e r e l a t e s an old , o ld legend. Through the ages m en have searched in va*n for this lost w ord. In its stead they found keys to a secret wisdom . T h e y learned how to unlock th e h idden possibilities slum ber­ing w ithin everyone . . . startling, unused powers th a t malce fo r a greater life.

Th is Sealed Book — F R EEA sealed book by the Rosicrucians, reveals the plan whereby you m ay obtain this wealth o f know ledge leading to the greater joys and rewards o f living. For free copy w ithout o b ­ligation, write Scribe E .H . X .,

U Be R O S I C R U C I A N S S a n J o s e [ a m o r c ] C a l i f o r n i a

N O T a religious organization

\g supply of Novelties H om ecrafters Outfit.

FREEIESS0 MHome A rt C r a ft

COOD MONEY FOR SPARE TIMEA new easy way. A rt novelties in b is demand. Get free lesson and Quickly learn to decorate G ifts. Bridge Prizes. Toys. etc . No experience necessary. Anyone can succeed with simple “ 3 -s te p '' method and you earn as you learn,

ry thing furnished incli for you to decorate 1

NO CANVASSINGJ u s t sit a t home and make up to $50 a

week spare time or full. W rite today for big illustrated book and FIRST LESSON FREE. Abso­lutely not one cent to pay.

m % Lesson is free. Openings in\ every locality. W rite quick.* FIRESIDE INDUSTRIES

Dept. 51-W. ADRIAN. MICH.

W restling BookFR EELearn a t

Home

Be an expert w w restler. Learn a t

homo by mail. The g r e a t e s tw restlers of all, F r a n k O o tc h and F a r m e r B u rn s , both w orld 's ehampiona have prepared the m ost w onderful course of les­sons ever w ritten on Scientific W restling , Physica l C u ltu re , Self D efen se and J iu -J it s u . Be stronjr, healthy, with an attractivebody. Handle and control bigger and stronger men with ease. Getthis F re e P ro sp e ctu s—32 pages-brim m ing with thrilling inform a­tion—No Charge—merely send 3c to cover postage. Don t delay. W rite Today for your copy. S tate your age.FA R M ER BU R N S SC H O O L, 3 3 9 9 Elw ood B ld g ., O m aha, Neb.

Set ServicingSpare lim e set serv­icing pays many N. R. I. men $200 to $1,000 a year. Full tim e men make as much as $30. $50, $75 a week.

brVngs FREE SAMPLE LESSONC lip the coupon and m all it. I ’m so sure th a t I can tra in you a t home in your spare tim e for a good job in R a­dio that I 'l l send you my first lesson free. Exam ine it, read it. See how clear and easy i t is to understand.Then you will know how’ many men w ith less than a gram m ar school edu­cation and no technical experience have become Iladio Experts and are earn ing good money as a resu lt of my tra in in g .

Many Radio Experts Make $30, $50, $75 a Week

In about 15 years, the Radio Indus­try has grown from a few m illion to hundreds of m illions of dollars. Over 300,000 jobs have been created by th is growth and thousands more will be creatcd by its continued develop­ment. M any men and young men with the r ig h t tra in in g — the kind of tra in ­ing I give you in the X. R. 1. Course — have stepped into Radio at b ig in ­creases over th e ir former salaries.Get Ready Now for Jobs Like These Broadcasting sta tions use engineers, operators, s ta tion managers and pay up to $3,000 a year. M anufacturers continually employ testers, inspectors, foremen, engineers, servicemen, buy­ers. for jobs paying up to $6,000 a year. Iladio operators on ships enjoy life, see the world, with board and lodging free, and get good pay be­sides. D ealers and jobbers employ service­men, salesm en, buyers, m anagers, and pay up to $75 a week. My book telts you about these and many other in teresting Radio jobs.T h ere 's opportunity for >-ou in Radio. Its fu tu re is certain . Television, short wave, loud speaker system s, police Radio, automo­bile Radio, aviation Radio—in every branch, developments and improvements are tak ­ing place.Many Make $5, $10. $15 a Week Extra in Spare Time While LearningThe day you enroll I s ta r t sending you E x tra Loud Speaker Systems Money Job Sheets which quiculy show you T . . , .how to do Radio repair jobs common in m ost 1 H s I a I I a t I O il anti every neighborhood. I give you plans and serv ice w ork is an - ideas that have m ade good spare time money o th e r g ro w in g , m on- -*200 to *1000 . y e a r U n d r e d s of ey m ak in i; Uel.l fo r

R a d io t r a in e d m en.

Broadcasting StationsE m p lo y m anagers, engineers, o p e r a ­tor-!, in sta lla tion and m aintenance m e u for jobs paving up to Sn.000 a year.

Free 64-Page Book of FactsM ail the coupon now. In addition to the sample lesson. 1 will send my book, "R ich Rewards in R ad io ." I t tells you about the opportunities in R adio; tells you about m.v Course, what others who have taken it are doing and m aking. This otter is free to any am bitious fellow over 15 years old. F in d out what Radio offers you w ithout the slightest obligation. M ail coupon in an envelope or paste It on a penny postcard. ACT NOW !

J. E. SMITH, President National Radio Institute. Dept. 5NP3

Washington, D. C.

| J . E . S M IT H , P r e s i d e n t

I N a t io n a l R a d io l n s t i t u t e , 5 N P 3 W a s h in g t o n , D . C .

1 I want to take advantage of■ your offer. Send me your Free■ Sam ple Lesson and your book.| "R ich Rewards in R ad io ." I

understand th is request does not | obligate me.| (P lease w rite plainly.)

I I| N A M E ...........................................................................AGE |

I II A D D R E S S .................................................................................. I

1 liD„ II C ITY ............ S T A T E ................ R I

S c i-c ." c e ! j « w n t . r - i Ic/3 C , /Oi

SUPPRESSED KNOWLEDGE

OF THE ACESW h a l sJrange powers d id (he ancfenfs

possess? Where was the source of know­ledge that made it possible for them to perform m irac le s? W ere these secrets burned w ilh ancient lib raries, or bur­ied beneath crum bling Temple waffs?

These wise men of the past knew the mysteries o f life and personal power. This wisdom is not lo st, — it is withheld from the mass, ®j M an's intolerance has at times swept his achievements from the face of the earth, yet secret broth­erhoods have preserved this sacred wis­dom of the ages. It is offered freely T O Y O U , If with an open mind you wish to step out of the rut of monotonous exist­ence, end M aster Your L ife .

This Sealed Book Loaned To You

I The Rosicrucians IN V IT E Y O U I to write and secure a freecopy I of the "S e a le d B o o k ." ft w ill [ point out how you may re­ceive a g e -o ld truths. You can learn to M A K E Y O U R j L IFE A N E W .Address: Scribe T. O. I

^ F J flCRosicrucians- A M O R O

SAN JOSE, CAUF0RN1A

New Ideas now Salable Before Patenting

Puctlcal, useful Invention* may now lie safelv tnar- M im| without patenting expense. Write for details.Chartered Institute o f American InventorsU ept. 3, B a r r i s t e r B u ild in g W a s h in g to n , D . C. World's Largest Association o f Inventors. Kst. 19£J>

neYear From Todayfliat Will You Be Earning?

This may be the most important year in your life* Your whole* fu tu r e is apt to de - iicncl bn how you take advantage o f present liusiness changes.

The "N ew D eal” is openinj? up new jobs, i reating' unusual opportunities. brinKinjj hack prosperity. H ut th a t does no t insure p rosperity f‘>r you. Only you can insure th a t.

For m onths—may be years—employers will bo iilile to pick and choose o u t o f the millions now unemployed or dissatisfied w ith th e ir w ork and pay. N aturally they will p ick th e m en w ith most p reparation and ability .

Youshould—you m u st—m ake yourBelf quickly more valuable—to p ro tec t w ha t you have and to hiH uregetting your share o f th e promotions and imyraiBes. I t is being done by O THERS—it can liodone by YOUI

Ask us to send you fu ll details abou t our new apare tim e tra in ing , and to explain how it pre- (i«r<-a you to m eet today’s dem ands and oppor­tunities. also abou t ou r Balary-increasingr plan. If you really a re in earnest, you should investi- KUte at once. Check your field below, w rite lou r nam e and address, and m ail.

LaSalle Extension UniversityD e p t . 1 8 3 - R C h ica go

' tand me, free, th e fa c ts about the dem ands and npiiortunities in th e business fieW I have checked - und about your tra in in g fo r th a t field, f ) Higher Accountancy □ IndustrialManagementI I Kupert Bookkeeping Cl Modern Foremanship(I limitless Management □ Bu»incss EnglishI I Trnflic Management Cl Law—LL. B. DegreeII P. A. Coaching □ Commercial LawI I Personnel Management Q StenotypyI I Modern Salesmanship □ Effective Speaking

Nufno _

|>f en«nt P o s it io n ___

A'ldress________

AMAZING NEW FEATS OF MOTORLESS PLANES

( Continued from page J 6)

sport. Recently, the Elmira Chamber of Commerce, through the aid of Federal funds, has established four permanent soaring sites on ridges near-by. Facing in different di­rections, I hey enable pilots t o get into the air no m atter from what direction the wind m ay blow.

Site Num ber One is known as Henry H ar­ris Hill. It has a cleared space 1,050 feet long and 200 feet wide and holds the headquarters buildings, the radio equipment and the mete­orological apparatus. Last year, airplanes landed and took off from this site during the meet. The ridge faces the Chemung River valley and is approximately 1,600 feet above sea level. Il provides soaring when the pre­vailing northwest winds are blowing.

THE second site faces the west, is 1,600 feet above sea level and has a take-off

field 600 feet long and 200 feet wide. I t is known on the topographic maps as M aby Ridge. Near-by is ‘‘Quarry Farm ” where M ark Twain once lived and where he did much of his writing. Site Num ber Three is live mites out from Elmira on a 1,560-foot ridge facing across a valley tow ard the American Airlines airport where soaring ships have 100 acres on which to land. The fourth site is eight miles out and faces the south. The ridge is 1,600 feet above sea level and has a launching field 750 feet long and 500 feet wide.

W ith improved roads leading to the take­off spots, this Chemung County “soaring plant’- is one of the finest in the world. An­other noted spot is at Big Meadows in the Shenandoah National Park, Ya. The Soaring Society of America has held several meets there. Last Spring, Lewin B. Barringer, of Philadelphia, tried out a new site near Elfen- ville, N. Y. Taking off in the “Albatross II," he remained aloft seven hours, rose to 5,000 feet, and sailed down the ridges to within ten miles of Harrisburg, Pa., before the updrafts gave out and he had lo land. He had covered approximately loO miles and was credited with beating Du Pont's record, made the year before in the same machine.

On the west coast, Clyde Artman has been using a 1,000-foot cliff for a starting spot. His soaring plane is placed on a sort of see­saw which is tipped up until the craft is pointing down over the edge of the cliff and Artman shoots downward in a dangerous, spine-tingling take-off. Sometimes, he dives as much as 500 feet before he eases back the stick and soars away.

Recently, the value of gliding in training air pilots received special recognition. At the U. S. Naval Air Station, at Pensacola, Fla., four officers who had had no training on powered ships, but had been given glider training instead, were able to keep up with a class th at had had ten hours dual instruction and two hours solo work before coming to Florida .

SO IM PR ESSED were naval air officials that six Franklin utility gliders are now

in use at the base. One half the men are starting their training on gliders, the other half on powered planes. Comparative results are expected to answer such im portant ques­tions as: Does glider training make better pilots? Does it save time in training pilots? Does it reduce the cost at an air school ?

In Germany, 40,000 glider pilots have been trained with less than half a dozen fatal acci­dents. In the United States, gliding reached a peak in 1050 and then, largely because of the depression, lost ground. Now, flying w ithout motors has come to the fore again, providing valuable training for air pilots, a sky laboratory for aeronautical engineers, and a thrilling sport for amateurs.

It’s the happiest moment in a m an’s life

W h b .v she sa y s y e s , th e whole world changes. I t ’s b righ ter. I t 's d ifferent! B u t as y o u r jo y increases, so does y o u r responsib ility . An­o th er person becom es a p a r tn e r in y o u r fu tu re . I f yo u prosper, she will prosper. I f you fail, b u t—

D on’t fail! In su re y o u r fu tu re ag a in st failure. E q u ip y o urse lf fo r progress an d prom otion. U tilize y o u r spare tim e. T h e In te rn a tio n a l C orrespondence Schools o iler a course th a t ju s t f its y o u r needs! T h o u ­sands o f successf ul m en tes tify to th e va lue o f 1. C . S. train ing . Investiga te to r you rse lf •— com plete in fo rm ation , free.

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B ox 7 6 6 6 - I I , S c r a n to n , P e n n a .W ithout cost or o b l ig a t io n , p lc a so Bend mo a copy of

y o u r b o o k le t, “ W ho W in s and W h y / ' and fu ll p a r t ic u la r s a b o u t the su b je c t before w h ich 1 have m arked X:

T E C H N I C A L A N D I N D U S T R I A L C O U R S E SCl A rc h ite c t□ A rc h ite c tu ra l D ra f ts m a n□ Building Estimating□ C o n tr a c to r a n d B u ild e r P S tr u c tu ra l D ra f ts m a n□ S tr u c tu ra l E n g in ee r Q E lec tr ica l fangmocr Q E loctrio L ig h tin g P T e le g ra p h E n g in ee r D T e le p h o n e W ork □ Ttadio D H ow to In v e n t a n d l a t e n t I ] M echan ica l K ng inecr Q M echan ica l D ra ftsm a n Cl P a tte rn m a k e r □ M a c h in is t Q R ead in g S h o p B lu e p rin ts Q H e a t T r e a tm e n t o f M e ta ls Q S h ee t M eta l W orker Q W elding, E lec tr ic a n d G a sQ C ivif E n g in ee r □ T o o lm a k e r £ j C o tto n M anufm a H ighw ay E n g in e e r # Q W oolen M a n u fa c tu rin gCl .Surveying a n d M a p p in g □ F r u i t G row ingCJ S a n ita ry E n g in ee r □ P o u ltry F arm in gCj S te am E n g in e e r D A g ric u ltu re

B U S I N E S S T R A I N I N G C O U R S E S

O A farine E n g in ee r□ B ridge E n g in ee r□ B ridge A B u ild in g F o re m a n□ Gas Engines□ D iesel E n g in es□ A v ia tio n E n g in es O A u to m o b ile W ork□ P lu m b in g □ S te a m F it t in g□ H e a tin g □ V e n tila tio n□ A ir C o n d itio n in g□ Itefrigeration□ It . K . Locom otives□ XL K . S ectio n F o rem an□ K . I t . S ig n a lm en□ A ir B rakes□ C h e m is try □ P h a rm a c y□ C oal M in ing□ N a v ig a tio

D B usiness M a n a g e m e n t C] In d u s tr ia l M a n a g e m e n t C] T ra ffic M a n a g e m e n t Q C o s t A c c o u n ta n t D A c co u n tan c y an d

C .P .A . C o ach in g C] B ookkeep ing C] S ecre ta r ia l W ork Q S p an ish □ F re n c h Cj S alesm an sh ip O W allp ap er 1 )eco ra tin g

Sales rnunshi

□ A d v e rtis in g□ B usiness C o rre sp o n d en ce□ L e tte r in g Show C a rd s□ English □ S igns□ S te n o g ra p h y a n d T y p in g□ C ivil S erv ice□ Kail w ay M ail C le rk□ M ail C a rr ie r□ G ra d e School S u b je c ts G H igh School S u b je c ts D C ollege P re p a ra to ry□ F ir s t Y ear Collego

□ Serv ice S ta tio n S a lesm an sh ip P I l lu s tra t in g □ C a rto o n in g

N a m e ...................................................... .......................................A g o .............

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C i ty ................................................................ S ta te ...................................

l 're scn t P o sitio n ......................................................................................I f }uou reside in Canada, send th is coupon to the

International Correspondence Schools Canadian, L im ited , M ontreal, Canada.

12 WEEK)r y j i o S E N D TO D A Y

m m J V f o r d e t a i l s o f m yI -Tu ition-A fte r -

X G ra d u a t io n 99 PlanS P re p a re f o r jobs in Radio B roadcast, T a lk ing Pic-

W f tu re s , T e lev is io n by 12 w e e k s o f p r a c t i c a l s h o p I w o r k En th e g re a t Coyne R adio Shops, on rea l RADIO

a n d Sound equipm ent, You d o n 't need advanced educa- tion o r experience. F ree Employment Service fo r life . M a nyearn w hile lea rn in g . E le c tr ic R efrig e ratio n —A ir Conditioning in . eluded. Mail co u pon today for fre<? book which tells you how hun­dreds havr* become successful R adioM enafter tak lngour training. H . C . L e w i s , P r e s . , C o y n o E le c t r i c a l & R a d io S c h o o l 5 0 0 S . P au lin a S t . , D ep t. 16-4H . C h ica g o , Illin o is

Send Free Radio Book and facts. Tell me about your *'P ay-Tu ition-After-G rad u a tio n " P lan .

A D D R E S S .

C IT Y __

L p d o

THE KEY TO SECRET W ISD O M"Like a £>olt from the heavens, the word was spoken and from the reverberations of its sacrcd syllables, camc the creation of the Universe.”—so relates an old, old legend. Through the ages men have searched in vain for this lost word. In its stead the/ found keys to a secret wisdom. They learned how to unlock the hidden possibilities slumber­ing within everyone . . . startling, unused powers that make for a greater life.

T h is S ea led B o o k — F R E E A sealed book by the Rosicrucians, reveals the plan whereby vou may obtain this wealth of knowledge leading to die greater joys and rewards of living. For free copy without ob­ligation, write Scribe D. L). M.

^fJjc R O S IC R U C IA N S S a n J o s b [ a m o r c ] C a l if o r n ia

N O T u religious organization

S E W IN D U S T R Y N E E D S M E N

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Would-be writers, more than anything else, should know that it is not sufficient to write. The technique of expression is bu t one thing. One must write from knowledge and experience. The thing about which you w rite m ust be interesting. M any who will not have an opportunity for a full fime job as a w riter will find training helpful for pa rt time activity.— W .II.L ., Ohio.

“WONDERFUL AID” IF YOU W ANT TO LEARN

For the past twelve and a half years I have been connected with the OverheadLine D epartm ent of the ---------- StreetRailway and while I have not arrived at. the top which I hope to reach some day, I feel tha t I have benefited from a corre­spondence school course and that it is cer­tainly responsible— in part, a t least— for what I have accomplished so far.

From my earliest recollection electric­ity and mechanics had always fascinated me and as I grew up I intended to study them. But unfortunately when I finished high school in 1922 I was unable to go on through college because of financial rea­sons. Instead, I went to work as a clerk in a grocery store.

M y first week's salary, however, went for a down paym ent on a correspondencecourse and I was enrolled with t h e ----------School as a student in electrical engineer­ing. D uring the next eleven months I worked as a clerk in several stores and studied at night, all the time trying to get a job in (he electrical line.

Thanks to the efforts of a representative of the correspondence school, I finally obtained a job with the street railway as a laborer on a pole setting crew. After a few months I was put on the electric welding crew, or bonding crew as they were called. This crew tested and re­paired all electrical connections to the track as well as miscellaneous jobs for the Overhead Line D epartm ent.

In January 1925 plans had been made to reconstruct the feeder system from a central station supply to supply from four sub-stationa with accompanying changes in feeder and transmission lines. Some one was needed in the office of the O ver­head Line D epartm ent to assist with esti­mates, blue prints, and construction rec­ords.

M y employer, himself a student of the same correspondence school, had taken an interest in me and offered me a chance at this job and with it went a substantial increase in salary.

A few months later the local public u tility com pany started a program of ex­pansion extending its services to several small towns within the radius of twenty to fifty miles. M y boss was pu t in charge of part of this work and I was able to secure a part time position assisting in laying out pole routes, estim ating the size

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Amazingly Easy Way to Get IntoELECTRICITY

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I P l a n . ■

N A M E .................................................................... A G E .

A D D R E S S .......................................................................

r" ’rr" r S T A T E ____

Pc r A c i e*A(. e I ovv f i< (

T H E

SUPPRESSED KNOWLEDGE

OF THE AGESW h at strange powers d id the ancients

possess? Where was the source of know­ledge thal made it possible for them to perform m irac le s? W ere these secrets burned w ith ancient lib raries, o r b u r ­ied beneath crum bling Temple walls?

These wise men of the past knew the m ysteries o f life end personal pow er. This wisdom is not lo st, —it is w ithheld from the mass. <J M an's intolerance has at times swept his achievements-from (he face o f (he earth , yet secret broth­erhoods have preserved this sacred wis­dom of the ages. It is offered fre e ly T O Y O U , if with an open mind you wish to step out of the rut of monotonous exist­ence, end M aste i Your L ife .

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The Rosicrucians IN V IT E YO U to w rite and secure a freecopy of the "S ea led B o o k ." It w ill point out how you may re­ceive a g e -o ld truths. You can team to M A K E Y O U R L IF E A N E W .Address: Scribe R. N.T.

Rosicrucians-AM ORC -

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IM S TO CA ST LEA D S O L D IER S . IN DIAN S. T R A P P ER S.

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TRAILERS CREATE ARMY OF MODERN GYPSIES

(Continued from page 3 2 )

teen miles to the gallon w ithout the trailer, his mileage dropped to fourteen w ith the unit attached to his car. His oil consumption re­mained the same. He averaged 350 miles daily, in ten hours’ driving, including all stops.

In a recent test with a streamline trailer, built along airplane lines, Hawley Bowlus, the famous sailplane designer, actually increased his car’s mileage more than three miles to the gallon. His 1,100-pound trailer eliminated the drag, or air suction, of the car by its stream ­line form. He achieved the “airplane effect” when he reached a speed of thirty-six miles an hour, when it felt to the driver as though the trailer had dropped off. In fact, many drivers told me they drive as fast w ith a trailer as w ithout. On more than one occasion, trailers have followed in the wake of the towing car at speeds in excess of seventy miles an hour.

YOU will find your travel costs are just about what you make them. They depend,

in part, on the distance you drive. Ralph N. Jordan and three relatives left Beloit, Kans., in August, traveled 7,100 miles through Ne­braska, Wyoming, M ontana, Idaho, down the Pacific Coast, and back home through Texas two months later, in a trailer costing $325; they spent sixty-five dollars for gasoline and oil, $125 for food and twenty-five dollars on incidentals—a daily average, exclusive of the purchase price, of ninety cents per person.

Given a trailer, where can you park ? The answer is—anywhere. Alongside the highway, on a country lane, a t virtually any service sta­tion, or in one of the thousands of special parks for trailer tourists.

In Washington, Oregon, and California alone, 1,000 trailer camps are now being pre­pared, a recent survey by the Automobile Club of Southern California shows. Camp operators are convinced “ trailerites” arc going to take to the road in droves. And they’re get­ting ready to supply, a t costs ranging from twenty-five to fifty cents a day, a level place to park car and trailer, with no backing out required; sanitary conveniences, shade trees, water, and service plug-ins so their visitors may have electric current.

Soon you will be able to roll out of your garage, no m atter where you live, and find ac­commodation a t the end of each day’s journey.

Trailer owners already have become gre­garious. An average of 500 trailers daily were parked in San Diego, Calif., during the recent exposition. Again in California, forty or more trailers frequently take to the highway for a two-day mass picnic. Members of the “Travel- Ome Club,” founded by R. T . Baumberger, who started building trailers as a hobby, take jaunts of 200 miles or more between Friday night and M onday morning.

ACROSS the continent a t Sarasota, Fla., is the largest trailer park in the world.

Last summer, 947 units were parked on its grounds during the annual trailer convention. Those attending last year’s convention regis­tered from forty-tw o states, plus the District of Columbia and four Canadian provinces.

Sociologists look on the tremendous increase in trailers as indicating a fundamental change in attitude tow ard the traditional obligations of home life. “ It may not be amiss," said O. T. Kreusser, director of Chicago’s Museum of Science and Industry, “ to predict that if pres­ent trends in buying cars or buying homes con­tinue, an increasingly large part of the popu­lation will live and carry on their home and business pursuits more around the automobile and less around a house as a fixed abode.”

Already, tens of thousands spend their win­ters in the South, migrating like birds to the N orth when spring comes, and living on wheels virtually the year ’round.

3 y 1 1r/3c= f

HOW TO GET

THE BEST RESULTSwith Your HarmonicaT he harm onica is such a p opu lar and widely used in stru m en t th a t we are anx­ious th a t all boys and girls should u n d e r­stan d its full possibilities so as to get the best m usical results. To do th is a selection of th e p roper type of harm onica is d e ­sirable.

X X X X

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to n e

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X X X X T he above m odels a re a ll av a ilab le in the keys of A, B-flat, C, D, E , E-flat, F, G. W here two or m ore harm onicas are piayed together, all m ust be in the sam e key, bu t d ifferen t m odels m ay be used to secure the desired m usical re ­su lts . T h is is done by the finest am a teu r and p rofessional harm onica bands.All H ohner H arm onicas, of every type, a re equally perfec t in construction , w orkm ansh ip and tone. F a m ilia rize yourself w ith the various m odels th a t you m ay get the g re a te s t en joy­m ent w ith your p laying . W rite for our F ree In ­s tru c tio n Book and illu s tra te d fo lder d escrib ing a ll H ohner H arm onicas. A ddress

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CREA*pp/?RAM ID

E S>DOM

L A N ?

E R E the ancients gifted with strange powers of foresight? Their

amasing predictions have startled the scientific world. Astounding is the revelation that they possessed a secret wisdom /or the supremacy of man and the mastery of life which has been preserved throughout the ages. Let the Rosicrucians explain how you may share this heritage of learning by writing today for the fascinating free Scaled Book. Address: Scribe K.O.S.

The ROSICRUCIANSSan Jo sc (AM ORC) California

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OIL-WELL SURGEONS PERFORM AMAZING FEATS

(Continued from page 2 3 )

scalpel-like, so il can be removed piece by piece.

Now and then, a broken pipe becomes crowded far back into the form ation when drillers vainly try to remove it. Tapered taps are lowered to screw into the open end in hope of engaging the threads; or an “overshot” is dropped to grip the stub with the teeth con­cealed within its cylindrical barrel. Perhaps the crew may angle for the ‘‘fish” with a harpoonlike spear; if other stratagems fail, a wall hook—an instrument somewhat resem­bling a gigantic can opener—is lowered. As it is slowly rotated, crafty fingers insert them ­selves behind the broken pipe, pulling it back into the hole where it can be removed by other grappling instruments.

F'Q R recovering small things such as pipe joints or collars that have slipped into the

hole, the surgeons have a variety of queer- looking instruments. Chisel-like tools chop obstructing steel objects into small pieces, which may be captured in metal baskets and raised to the surface.

A group of oil-well surgeons once was baf­fled by a California well which persisted in strangling itself. Oil flowing upward brought sand which rose until it neared the surface where the casing widened and the pressure dropped off. Here the grains accumulated, forming a “floating bridge’’ or lump which soon obstructed all flow. Efforts to drill out this plug were futile, for the weight of the bit on the lump acted as a piston, building up a heavy gas pressure. W hen the bridge was pene­trated, this suddenly released pressure sent tools flying upward in a tangled skein of steel.

The case seemed hopeless, but a young en­gineer had an idea. He tinkered in his w ork­shop until he had devised an instrum ent like a double-boiler kettle, with telescoping upper and lower compartments. After the device had been lowered, a sudden tug expanded the up­per chamber, sucking the contents of the lower compartment upward. To fill the vac­uum thus created, loose material beneath was drawn into the bottom of the kettle, where it was trapped by a valve. Like a “plumber's friend” working upon a clogged kitchen sink, the tool sucked up the accumulated settlings in the plugged well until oil flowed again.

Since then, the young inventor’s suction bailer has been used in many holes clogged by sediment. Producing wells in the Oklahoma field have been found filled w ith sand for a third of their 6,500-foot depth. From such wells the bailer commonly brings up a variety of objects ranging from bits of steel and wire to sticks and chunks of rock. Often, when opened, it is found to contain w hat seems to be a basketful of eggs. These objects are frag­ments of extremely hard rock, worn smooth and egg-shaped by constant churning in the flow of fluid at the bottom of the hole. They act as virtual roller bearings upon which the drill spins without making further progress. Extracting such bodies from the throats of sick wells is just one of the deft bits of sur­gery performed by the oil-well expert.

MEMORY BEST AT AGES ELEVEN TO FOURTEEN

W i i a t past event is most vivid in your memory? According to a recent statem ent by Dr. J . Alison Glover, London physician, peo­ple recall most clearly the tilings which hap­pened when they were between eleven and fourteen years old. Although he admits that there are many exceptions to this rule, Dr. Glover believes that educators should take the fact into consideration in the teaching and handling of children a t the eleven-to-fourteen- year period.

'T ’ H E S E b o o k s w e re p re p a re d f o r m en

o f i d e a s — m en w ho h a v e nn a r t i c l e in m in d t h a t w il l m a k e m o n ey . s a v e m o n ey , s a v e la b o r o r wive p le a s u r e . 'L’lie a v - i-rag e m an p ro b a b ly h a s bet t e r o p p o r tu n i ty to d a y t b a n e v e r b e fo re to c a s h - in on ft w o r th w h i le in - v o litio n . B ut he m u s t know w h a t to do to p ro te c t h im self and how to g e t h is in v en ­tio n be fo re th e b u y ­in g pub lic ,

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CHEMICAL WIZARDS REMAKE THE WORLD

(Continued from page n )

Its base is a white, flaky compound known as diphenyl—a chemical relative of synthetic ge­ranium perfume— which turns to vapor at about 500 degrees F. Since it holds more heat than steam, and can be raised to a greater tem perature w ithout developing dangerous pressure, the new heat-carrying material has already found industrial applications.

HOM E refrigeration, too, has comc in for attention from the chemical engineer.

Ice boxes employing “dry ice,” or solidified carbon dioxide, as a refrigerant have recently been introduced, particularly for use in hot regions o f the country where ice factories are remote and where electricity is not available. The dry ice is placed in an insulated inner compartment so that it will not w ithdraw heat too rapidly, as its tem perature of 109 degrees F. below zero would otherwise freeze solid the whole contents of the refrigerator. Its chilling effect, transm itted through metal fins on the com partm ent, can be regulated to keep the ice-box tem perature within the de­sired limits. A novel advantage resulting from evaporation of the refrigerant is the atm os­phere of carbon dioxide formed within the ice box, which is said to retard bacterial growth and also to check the spread of food odors.

Frying pans of glass with superior heat-rc- sisting qualities, for cooking on top of the stove, are the result of a recent chemical im ­provement upon the glass used in standard oven ware. Behind this development lies the story of chemists who turned cooks in a Corning, N. Y., laboratory to test glassware made from as m any as 1,500 promising new formulas. Tons of potatoes and countless ham­burger steaks sizzled in their dishes. Hungry dogs, more pleased than the scientists them ­selves with some of the first results, got many of the meals. Some of the food was burned black— purposely— to sec what the glassware would stand. Eventually the experimenters a r­rived at the formula they were seeking, which is embodied in the glassware that has just reached the market.

Xo article used about the home is too in­consequential to a ttract the interest of skilled chemists. One has just produced a “ nonskid” floor wax by impregnating ordinary wax with rubber, preventing falls on a freshly polished floor. Another has improved cedar chests by perfecting a transparent exterior coating which retains both the natural oil of the wood and its m oth-repelling aroma. Thus, even to the smallest details, chemists arc helping to make the world a better place to live in.

WINE TO HELP DRIVE ITALY’S MOTOR CARS

W in e and driving do not mix well but soon Italy ’s m otor cars will be consuming the sur­plus of her bumper “vino” crop. The wine, it is reported, will be converted into alcohol which will be blended with gasoline as a mo­tor fuel. Italy already has a law making the use of an aicohof-gasoline blend compulsory.

RED LIGHT IS BEST FOR CATCHING WORMS

F i s h e r m e n should use a red light when searching for worms, according to W\ R. W al­ton of the U. S. Departm ent of Agriculture. Recent tests indicate that nightwalkers and other worms are insensitive to red light but quickly retreat into the ground when exposed to the rays of an ordinary lantern or flash light. Anglers are advised to use a red lens or to cover the glass with red paper.

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CLEANING UP THE BATTLEFIELDS(Continued from page 1 3 )

the Sun moves north as men travel south, until finally it shines continuously in the north.For 1,500 years men

jghed at the “gullibil­ity" of the ancients, until,

by sailing past the Equator, Europeans of the Middle Ages

DISCOVERED what the Egyptians KNEW thousands of years before.

Suppressed Knowledge of A ncient Sages—lost to the world for 3,000 years, but preserved by the FEW who could appreciate and use it — is available to you, through association with the Rosicrucians. Their unique and success­ful methods of mastering life's problems and developing Personal Power arc even more effective today. Try their for­mulas on your own personal and practical problems.

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Send for ti Free Copy of “The Secret Heritage.” It may open up a new world of personal satisfaction and practical achievement; it might have a startling efject upon your o»n future. It is sent free to the serious. Address ScribeD.C.E.

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San Jose California(N o t a religious organization)

the surface of that “ red zone” of France and Belgium. Spring plowing is a dread ordeal for the farmer, who may be blown to pieces as his plow or his horse’s hoofs strike a hidden obus —French for shell.

In war, it took 400 shells to kill a man. In peace, almost every exploding “dud” kills at least one man, woman, or child.

So discouraged were many peasants that they begged Paris to find new ways to end the menace. Now to clean up the battlefields, there has sprung into being an industry unique in the business world—the Entreprise de D&- sobusagc; meaning “ Company for Un-shelling Shells.” The main office and “ plant” of this remarkable concern are in a castle—the ancient and picturesque Chateau of Coucy, near St. Gobain Forest where the Germans hid the long-range guns that shelled Paris. From there is directed the battle for peace waged by 5,000 men scattered through the “ red zone.”

EACH of them covers a certain area, where every one knows him and his wTork. He

does some searching for duds on his own, but mostly, like a fireman, he awaits the alarm.

At St. Aubin and Heurtebise, where the company maintains its two shell-exploding grounds, there arc notable battlefield museums but few tourists see them. They seem to stay away. Here great piles of shells, many still bearing fuses, aw ait the m inistrations of I sturdy, former French artillerymen in cor­duroy.

First they inspect the fuse, if necessary, with a microscope, to see whether it can safely be handled a t all. If there is any doubt about it, back it goes into a specially-built truck. A workman drives it out to a secluded field. The whole surface is pockmarked with shell craters. To the metal shell fuse he attaches another of the type that miners use. I t is long enough so that he can light it and have time to get into an underground dugout before the explosion.

Near that blasted field is a wood in which the trees and underbrush are wilted, blighted. Here gas bombs are taken. W orkmen who handle them, put on gas masks and, wearing gloves, daringly let out the gas—but only when the wind is blowing strongly enough to take it away from them. The empty bomb is sold for junk.

SO ARE empty shells, if they can safely be emptied. I f the expert’s trained eye de­

termines that he can remove the fuse without blowing himself to Kingdom Come, he puts the shell in a vise equipped w ith a hand-op­erated wheel, and removes it— usually by un­screwing it. W ithout its “spark plug,” the shell is harmless. Through the hole where the fuse was, other workmen pour out the powder of the charge. The French Government gets that, tests it, puts it into new shells. The shell cases and other metal belong to the company, which has gathered from the battlefields anti sold the amazing total of a million pounds of copper and lead, and seven million tons of iron and steel. In the last six years, the experts have destroyed 167,000 tons of dud>, but have brought in 1.500.000 tons and still have left, undestroyed, 350,000 tons. To gather that deadliest junk pile on earth, 5,000 men have risked death driving 350,000 miles.

They are about the most careful truck drivers on earth. Two years ago, one had an accident. Loaded w ith cylindrical death, his truck upset. A great sheet of flame, a frightful crash, a rending roar. The truck flew to flin­ders; every window in four villages was broken; a crater forty feet deep was dug. At the bottom was the driver. As rescuers arrived, he arose, and dusted off his corduroys.

In all these years, not one man employed in cleaning up the battlefield has been killed I

Yet the task of reconstruction stimulated invention and perfection of new and better machinery and appliances, and the determi­nation to rebuild better than ever. The sturdy French peasants returned to the ruins, sought out their old homes; began over again in cel­lars—in shacks made of corrugated iron from dugouts, or in the dugouts themselves. With splendid energy, in two years they had filled in 134,000,000 cubic meters of trenches and

A liquid-fire th row er, one of the g rim souve­n irs recovered from the F rench battle fie ld s

shell holes and reaped a sinister harvest of 182,000,000 meters of barbed wire, virtually reclaiming all of the 10,000,000 acres—on the surface.

That surface had been littered w ith unex­ploded shells, hand grenades, cartridges. To pick them up, was risky, but it was done. But, duds got into strange places. A woman used one to prop open a stove door. Another lighted a fire to warm a dugout, and touched off a dud under the floor. Beneath other floors were gas shells left behind by the retreating Germans, w ith time fuses set, to gas the Al­lied troops subsequently occupying the dug- outs. Those that did not work remained, to be jarred into activity by the returning French peasants. So, in the “red zone,” many a man, woman, and child carried a gas mask.

Often a road crossing, bridge, or railroad station would suddenly disappear in flame and smoke, as a forgotten mine blew up. Years after the Armistice, near Douai, workmen were digging beneath a railroad station. Some­thing caught a pick. The laborer started to yank. But a former soldier seized his arm.

" / ^ A R E F U L !” he cautioned. “I t m ay be a m ine!”

It was a mine— enough buried high explo­sive to have blown the station sky high.

Although, within a few years, most of the “red zone” looked as if it had been cleaned up, danger still lurked beneath the surface. Mostly, dud shells.

W hat causes duds? W hy don 't shells ex­plode? Perhaps, because the bursting charge of powder has become damp or deteriorated; perhaps, because the gun had a firing-pin too blunted to ignite the fuse; but probably, be­cause there was something wrong in the fuse, the spark plug of the shell.

How many shells were fired in the World W ar? In the forty-seven days of the greatest of American battles, the Meuse-Argonne, the cannon of our First Army fired 4,216.575 shells—and there were bombs and bullets be­sides. In 1918 there were, on the Western Front, twelve m ajor battles and innumerable smaller engagements and bombardments. Per­haps Allies and Germans fired 200,000,000 shells on the Western Front that one year. There were four years of war, and a dozen or more “ fronts,” great and small.

So, millions upon millions of duds lie scat­tered on the battle-fields, especially beneath

M l

S U P P R E S S E DK N O W L E D G E

O F T H E A G E S

What strange powers did the ancients possess? Where was the source of knowledge that made it possible for them to perform miracles? Were these pro­found secrets burned with ancient libraries, or are they buried beneath crumbling Temple walls? These wise men of the past knew the mysteries of life, and personal power. This wisdom is not lost—it is withheld from the mass. It is offered freely TO YOU if, with

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DEADLY MAGNETIC RAYS AID WAR ON CANCER

(Continued from page i j )

particles travel in an ever-widening spiral, constrained by the magnet to follow a rough­ly circular path, while two charged electric plates take turns in boosting their speed with SO,000-volt kicks at each half revolution. By the time they reach the rim of the pill box, the atomic bullets are moving at the almost incredible speed of 12,000 or more miles a second! Through his ingenious scheme of prodding the speeding projectiles in his atomic whirligig with several hundred successive kicks of comparatively low voltage, Professor Lawrence obtains a beam that could be dupli­cated only by the application of millions of volts to a conventional vacuum tube.

TO EXPOSE objects to the ray, it was originally necessary to place them within

the pill box. Recent improvements in the apparatus have made it possible for the first time to bring a 6 ,000,000-volt beam of heavy- hydrogen particles right out into the open air. Now scientists can see with their own eyes the marvel of a beam of radiation more than five times as powerful as any that has ever been produced before— even in a vacuum tube, where collisions with air particles do not slow down the high-speed particles. And being able to work in the open w ith the ray has permitted fascinating new tests of its powers.

When the cyclotron’s greenish-blue beam is shot against a target of beryllium metal, powerful “secondary” or recoil radiations stream forth—much as X rays are produced when a cathode-ray beam of speeding elec­trons is trained upon a metal target in an X -ray tube. The rays from the cyclotron beam's impact, however, are far more pene­trating than X rays. They are believed to be streams of atomic particles of a recently discovered sort known as “ neutrons,” pro­duced by the m utual shattering of the particles composing the cyclotron beam and of the atoms of the metal target. No known shield will stop them completely. They pass through the thickest walls of metal as sun­light pours through a window. Tanks of water, which slow the rays down, have proved the best barrier.

So deadly a menace are the neutron rays, the by-products of the m agnetic-ray gun’s luminous beam, that the University of Cali­fornia experimenters have issued a warning to research workers in other laboratories where cyclotrons are now being built. Lack of protective screening to shield laboratory workers from the ray's, it is pointed out, might easily cause a series of tragedies such as followed the discovery of X rays, in the late 1890’s, before the danger of injurious or fatal “ burns” was realized.

T ESTS w ith 200 mice have shown the rays to be nearly three times as destruc­

tive as X rays to healthy tissue. The same tests, however, indicated that the rays were four times as destructive as X rays to un­healthy tissue, as represented by a certain type of cancerlike tum or in mice. In this significant difference lies the hope of apply­ing the rays to the treatm ent of hum an cancer.

Two powerful weapons now used against cancer—radium, and its modern rival, high- voltage X rays—both provide deeply penetrat­ing rays th a t attack hum an tissue selectively, destroying malignant tumors and leaving normal tissue unharmed. Often, however, it is impossible to give a large-enough dose of rays to kill the m alignant growth w ithout harming the patient. The best that can be done at present w ith X rays is to cure or benefit about fifteen percent of the patients treated— barely one out of six! Far more sufferers could be relieved if some kind of radiation relatively (Cotitinued on page 108 )

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ODD LABORATORY SOLVES SECRETS OF COAL

(Continued, from page 120 )

was formed in the dim and remote ages of Ihe past, for the process is still going on in the peat bogs of the present day. In many parts of the United States and other countries, there are swamps where trees and smaller plants are going through the ancient process of death, decay, and compression. These peat hogs are a fertile field for scientific explora­tion.

With his microscope, Dr. Thiessen ex­plores a peat bed from top to bottom . A vertical column of peat, perhaps twenty inches square, is cut from a bed and shipped to the laboratory in Pittsburgh. Before the actual microscopic examination of the vari­ous peat layers, the material is analyzed chemically to reveal the action of the forces causing its decomposition. This involves a careful study of the bacteria, fungi, burrow­ing insects, and other lower forms of life re­sponsible for the gradual decay of the mass of plant material.

ALTH O U G H there have been reports of the finding of insect remains and of bac­

teria in coal beds, the discovery of a fossilized bug or bacterium is an event yet to be expe­rienced in the P ittsburgh laboratory. Some investigators have claimed that they have dis­covered living bacteria in coal, but Dr. Thies­sen has not succeeded in finding even a dead germ. In the peat beds th at will form the coal deposits of a future time, however, bac­teria are present in huge quantities.

For purposes of scientific study, these bac­teria are grown in the laboratory on sawdust, shavings, or cellulose. Kept in bottles and flasks, they are provided with nitrogen and other mineral culture solutions necessary for their growth. Peat bacteria have been kept alive in the laboratory for seven years, while their part in the chemistry of decay was be­ing studied and analyzed.

It is believed that the action of these bac­teria is to a large degree responsible for the decay of the woody substances and the forma­tion of humins, one of the principal materials to be found in peat. Ju s t w hat happens to the bacteria is not clearly known, but it has been suggested by some investigators that these peal bacteria themselves become a part of the very deposit that they have created.

Coal is found only in the form of beds, which m ay vary from a few inches to many feet in thickness and may range up to hun­dreds of miles in area. Each bed was formed during a definite period of geological history and therefore contains characteristic types of plant remains which provide the laboratory key to the exact variety of coal to he found there. In some coal regions, such as West Virginia, there m ay be th irty or more distinct coal beds, separated from one another by Beams of shale, sandstone, limestone, or other rock.

GENERA L naked-eye methods of classifi­cation, and the more exact method of the

microscope, are today enabling producers to sort the products of their mines into the types best adapted for the various coal uses, such as domestic heating, commercial steam pro­duction, or the m anufacture of illuminating Kas, tar, and other by-products.

So the laboratory in Pittsburgh unravels and records the life history of coal, and Wakes the microscope as im portant a coal­mining tool as the pick, shovel, or pneumatic drill. W hen next you are tem pted to regard your coal bin with disgust, remember that those dirty chunks of common coal not only Conceal hidden beauties, but also contain within themselves the indelible records of biological and geological history for millions of years.

T H E

A SECRET METHOD FOR THE MASTERY OF LIFE

W HENCE came the knowledge th a t built the Pyram ids and the m ighty Tem ples o f the Pharaohs? C ivilization began in the N ile Valley centuries ago. W here d id its first builders acquire their

astounding w isdom th a t started m an on his upw ard clim b? Beginning with n augh t they overcame natu re’s forces and gave the w orld its first sciences and arts. D id their know ledge come from a race now subm erged beneath the sea, o r were they touched w ith Infinite inspiration? From w hat concealed source came th e w isdom th a t produced such characters as A m enhotep IV, L eonardo da V inci, Isaac N ew ton, and a host o f others?

Today it is known th a t they discovered an d learned to in terpre t certain Secret Methods for the developm ent o f their inner pow er o f m ind. T hey learned to com m and the inner forces w ithin their own beings, and to m aster life. T h is secret art o f living has been preserved and handed down th roughout the ages. Today it is extended to those w ho dare to use its profound p rin ­ciples to m eet and solve the problem s o f life in these com plex times.

This Sealed Book-FREEH as life brought you that personal satisfaction, the sense of achievement and happiness that you desire? If not, it is your duty to yourself to learn about this rational method of applying natural laws for the mastery o f life. T o the thoughtful person it is obvious that everyone cannot be entrusted with an intimate knowledge of the mysteries of life, foe everyone is rtoC capable o f properly using it. But if you are one o f those possessed o f a. true desire to forge ahead and wish to make use of the subtle influences of life, the Rosicrucians (not a religious organization) will send you A Sealed Book of explanation without obligation. This Sealed Book tells how you, in the privacy of your own home, without interference with your personal affairs or manner of living, may receive these secret teachings. N o t weird or strange practices, but a rational application of the basic laws of life. Use the coupon, and obtain your complimentary copy.

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(Continued, from page 40)

first week he employed actors, built a village, rented various props, bought set dressings and wardrobe, and rewrote introductory se­quences to his picture. He decided to open with an inland ice village, instead of a sealing town, since no seals could be found a t the time.

Ten days later he left the mainland, head­ing across the ice toward the open sea. Forty miles from shore he found six creamy polar bears enjoying a feast. Quickly he set up one camera on an iceberg, the other in a near-by boat for quick action in chasing the animals, while an Eskimo, obeying signs, darted in w ith a spear to harass the bears. Four hunters moved in on the bears behind blinds made of skins and m ounted on sleigh runners, ready w ith cocked rifles to beat off the beasts should they attack the director and technical crew.

CU T holes into the ^masonry with a cold •''■ ;*<

chisel, insert bolts w ith heads in \ \ .\yV to form studs, and tam p rem ain- V ; ing open spaces full of Smooth- \On No. 1. Let the Smooth-On >*»harden, then slip the brackets, md ea ls or uprights over the studs and fasten with nuts or nuts and washers. A ]4-in. bolt set thisway holds a m an’s weight w ithout loosening. Use this method to anchor cellar shelves, partitions, wall cabinets, etc. M akes a strong perm anently tight connection th a t meets every need.

t-T E just d idn’t feellike work • • Ior play. Always draggy -Jm

and worn o u t—often cross and irritable. But like so m any %-~*m3SW women, his wife knew about \N atu re’s Remedy (N R Tab- s - lets). She p u t him wise. H e found ou t w hat an astonishing difference there wns in th is purely vegetable laxative. N o t merely partial relief. Instead thorough, cleansing action th a t aided in ridding his system o f poisonous waste, re­freshed him, m adchim feel like a “million.” T ry N R Tablets jyoursclf. N ote how gentle they are

BUT it is the unexpected, the tragic mishap, which often provides a greater thrill than

the scenes th a t reach the screen.Recently I carried a crew of 100 men into

the white-pine forests of northern Idaho to film sequences for a forthcoming Samuel Goldwyn production. In those woods I left a trail marked by one grave, a hospital ward filled w ith broken bodies, and a dozen choking pneumonia victims. Back in H olly­wood I was asked, simply, “Did you get the p icture?”

Imagine yourself “on location.” We are standing on a tall parallel, a platform built of wood whose supports dig down through twelve feet of snow. Our camera is trained on a beautiful, tall white pine whose top is bathed in m orning sunlight. Laboriously a lumberjack climbs, heading for a point 120 feet up where he is to plant dynam ite for a “topping” scene. Suddenly, when eighty feet up, he loses his grip, falls eight feel, and lies inert across a tree limb, dead of heart failure. Another lumberjack goes up, to lower the body on a rope. And the picture-m aking goes on.

In a Hollywood projection room, four months later, you view some of the uncut scenes. You see giant pines, firs, and spruce toppling, logs being skidded into Jong flumes for the race to the Clearwater River, logs jamming in the stream. The film suddenly shows a log jam stretched across the Clear­water at a point where it is 350 feet wide. Into the scene rushes a crew of th irty river- men, bent on breaking the jam with their peavies. You hear their yells and the orders from their foreman.

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2 3 4 5 W . G r a n d B lv d . DETROIT - MICH.SUD DENLY a strange sound booms out

through the loudspeaker, a noise like dis­tant cannonading. Rivermen rush desperately from the center of the jam to the shore line, but six are caught in the break-up W ith the skill of years, they leap from log to log, lose their footing in the tumbling mass of timber, struggle to escape death. In to the picture come twisting, uncoiling ropes throw n from shore, throw n by men who were not assigned to the jam sequence, but have now only the thought of saving their fellow workers. W ith­out warning, the scene ends. The camera has stopped as cameramen desert their posts and climb over near-by logs to aid in the rescue. Another thrill is lost to the theater.

Thrill directors not only work in the dark as far as public recognition is concerned, bu t they also get the toughest assignments in pictures. One of my colleagues flew the other day from Hollywood to Medford, Ore., to film a scene showing a monoplane diving 9,000 feet toward the earth.

"E asy ,’’ he thought. ' ‘We’ll train the cam­era on the ship (C ontinued on page 12 5 )

40P a ttern s

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GUS GIVES SOME TIPS ON TRAILERS

(C ontinued f rom page 13 2 )

“One of the advantages of living in a m otor trailer is you can follow the birds south in the fall, and you needn’t ever stay where it's cold enough to need heating. But if you do, an ordinary small oil stove will heat up this small space in no time at all. In fact, you’ll have to tu rn the burner ’way down to keep from getting too hot.”

‘‘Yes, that would be the solution, all right,” Pendleton agreed. “ And I suppose if you were in a camp where street current was on tap, you could use a small electric heater and avoid the kerosene smell. Heat insulation would help a lot on that. Is there any heat insulation in this ou tfit?1’

" C 'U R E ,” Gus replied. “There’s a double floor w ith a layer of cork board between

the layers, and the walls and top have heat insulation between the outside and inside surfaces. But the purpose of the insulation is not so much to make it easy to heat in winter, as to help keep it cool in summer. Most camps that cater to trailer tourists fix things so th a t you can park under a tree, but if you had to park out in the sun, the inside of this outfit would get as hot as an oven in no time at all w ithout the insulation.”

‘‘Guess it takes quite a little more gas to tow an outfit like this doesn’t it ?” Pendleton questioned.

“Bring up that subject with a m otor-trailer enthusiast, and you’ll have a real argu­ment on your hands,” laughed Gus. “Of course, it stands to reason that you can’t pull an extra couple of thousand pounds along w ithout using more power to do it, and more power means more gasoline burned. But the increase is not at all in proportion to the increase of your load.

“Suppose, for instance,” Gus continued, “ that your car weighs, say, 3,000 pounds or thereabouts, and your motor trailer weighs in the neighborhood of 2,000 pounds. Adding the trailer would increase your total load to5,000 pounds. If weight were the only thing that counted, and you got fifteen miles to the gallon w ithout the trailer, you should get only nine miles with it. Actually, you’ll probably only do a mile or two less to the gallon w ith the trailer than w ithout it.”

“How do you figure that o u t? ” Pendleton asked.

" I T ’S all a m atter of friction and wind 1 resistance,” Gus pointed out. “On level

ground, it takes m ighty little power to over­come the friction of a pair of roller bearings, even when they are loaded with 2,000 pounds, and the wind resistance a t moderate speeds doesn’t am ount to much if the outfit is streamlined a bit. So the only time you really use m ore power is in getting the load started n d in pulling up hill. Part of this you get ba-.k, because the extra weight makes you coast better on gentle down grades. Of course, if you will burn up the road at high speed, the w'ind resistance is bound to make a difference.”

“Want to sell this outfit ?” Pendleton asked suddenly.

“N ot on your life!” Gus grinned, “but I can give you the names of some concerns that make trailers of about the same type.”

“Who are th ey ?” Pendleton asked, fishing out a notebook and pencil. “ My landlord’s getting a bit uppity. Guess I ’ll walk out on him, buy a trailer, and the wife and I will head for Florida for a couple of months. I can afford it if I don’t have rent to pay hese.”

"He w on’t be the first landlord th at has been handed a jolt like that these days!” Gus chuckled, as he pulled a bunch of trailer catalogs out of a drawer.

■ ■ V I C T O R J . M -

EVANS ErbO.

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