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Back Matter Source: The Scientific Monthly, Vol. 24, No. 3 (Mar., 1927), pp. ix-xvi Published by: American Association for the Advancement of Science Stable URL: http://www.jstor.org/stable/7775 . Accessed: 02/05/2014 17:46 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve and extend access to The Scientific Monthly. http://www.jstor.org This content downloaded from 62.122.73.84 on Fri, 2 May 2014 17:46:05 PM All use subject to JSTOR Terms and Conditions
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Page 1: Back Matter

Back MatterSource: The Scientific Monthly, Vol. 24, No. 3 (Mar., 1927), pp. ix-xviPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/7775 .

Accessed: 02/05/2014 17:46

Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp

.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].

.

American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve andextend access to The Scientific Monthly.

http://www.jstor.org

This content downloaded from 62.122.73.84 on Fri, 2 May 2014 17:46:05 PMAll use subject to JSTOR Terms and Conditions

Page 2: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS i

Every livingand grow- Day after day the Triple ing thing, from bugs to Aplanat serves geolo- blossoms, reveals new gists, miners and min- and fascinating charac- eralogists, just as it con- teristics when seen stantly helps farmers, thro ugh the Triple professional men, manu- Aplanat. facturers and others.

See it for Yourself Y OU KNOW how it is to buy some There is a vast difference in magni-

needed article, use it for a while fiers. Cheap glasses are sharp only in and then wonder, "How did I ever the center, and the image at the margin

get along without it?" is distorted, blurred and fuzzy with color fringes. The Triple Aplanat is dis-

It is just that way with a good pocket tinetly different, giving a sharp, spark- magnifier, like the Bausch & Lomb ling image right up to the very edge of Triple Aplanat. Everyone who carries its large field of view. There is no dis- and uses one of these fine little instru- tortion, no rainbow effect, no astigma- ments generally finds it as handy and as tism. The glass is right, in its funda- indispensible as a fountain pen or a mental design by the Bausch & Lomb

scientists and in the care and perfection pocket knife, with which it is made.

Everyone buys and sells. Most of us The wonderful correction of the manufacture. The Triple Aplanat is Triple Aplanat is obtained by combin- always helpful in determining or demon- ing in one instrument, three lenses of strating textures, fabrics, materials, con- precisely the right curves made of two struction. It is a most valuable tool for different kinds of Bausch & Lomb opti- anyone who teaches or studies the cal glass. After these lenses have been wonders of nature, as manifested in any cemented together, they are set in a of the various branqhes of the animal, folding mount of hand polished nickel, vegetable or mineral kingdoms. To the which affords protection from dirt and meechanic, as to the professional or scratches. A small ring is provided for business man, it is a constant aid, not attaching to watch-chain or key-ring. only in learning the true facts, but in Greater knowledge, through better conveying this truth to others. To see vision, awaits you in the Triple Aplanat. is always to believe. Let us send you one today.

Price, all powers, $6.00

Bausch & Lomb Optical Co. 633 St. Paul St. Rochester, N. Y.

7x 10x 14x 20x Actual

_ 7xq lOx |iF 14x g 20x Size

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Page 3: Back Matter

x THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

/-t< , > 4 FIsEPMOF Marine Biological Laboratory ( n/J9L^+^ !_> Broadway Woods Hole, Mass.

g J.,) AT 1 Biological Material - x~~~~~2t . Zoology. Preserved ma-

terial of all types of animals

Streett tv or fo ee lanss.okad o h

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Center of New York'al Con-ie erors MScies,fcal Fernsect

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_______________________________ ANTHONY FIALA., 25 Warren St., New York

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Page 4: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS i

7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SLIDING VERNIER GAUGE with Thumb Adjustment

Calibrated in both inches and centimeters. Vernier reads

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You Will Never Go Back to the Old Aneroids, When You Try a

PAULIN PRECISION ALTIMETER One man with a "Paulin Altimeter" can

['4 Smake a reconnaissance survey and place t his contours accurately, in less time than

two men could do it in the old way with level and rod.

* I. Accurate as a Mercurial Barometer. 2. Anyone can read the instrument with-

out mathematical corrections. 3. Light and Portable. Can be safely

shipped any distance without losing ' ~~~~~~~~~~~accuracy.

4. Cost about half of a mercurial Ba- rometer.

5. Used by U. S. Engineers, Oil Com- panies, Railroads, Highway Commis- sions, etc.

Write for circular A

"Trying to compare the Paulin Altimeters with the old FIALA OUTFITS, Inc. standard aneroids, one seems to be at a loss, becawe there smply oanot be applied any compariso. The Pa-ulin Eastern Representatives Altimeter seem1, to me, so far superior that no other aneroid can come into oonsideration, where reliable quik 25 Warren St. New York City readings are requtred." Complete Equipment for Engineers, Ex-

J. V. D. GRACHT (Geologis). plorers, Camping, Touring, etc.

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Page 5: Back Matter

xii THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

The Psychology of Thought. By H. L. HOLLING- WORTH. $3.00. D. Appleton and Company, N. Y.

The subject is appronched through studies of sleep- Tilihe advancement ing and dreaming. WNhat thoughts are, how judg- ments and Ideas originate, how motives determine the course of reflection and how thought processes

of education ,re related to other types of mental activity-are among the chief topics.

as a science Hygieia or Disease and Evolution. By BURTON

P. THOM. 107 pp. $1.00. E. P. Dutton and Company. The adjustm ent Another addition to the "To-day and To-morrow Series." What disease really Is, its vast importance

of our schools as a factor in the survival of the fittest and how man will eventually become immuine to it-are some

to the needs of of the interesting phases of whliclh the author treats.

modern life Peopling the Argentine Pampa. By MARK JEFFERSON. 200 pp. $4.00. American Geo- graphical Society, N. Y.

These two phrases are an expres- A thorough study written as a result of a journey made In 1918 on behalf of the American Geographical

sion of the vital interests of every Society to study European colonization in the Argen- tine Republic. The text is illustrated with excellent

progressive scientist concerned photographs.

with the development of educa- Procedures in Employment Psychology. By tion. They are also a statement WALTER V. BINGHAM and MAx FREYD. 262 pp.

of the objects of SCHOOL AND $5.00. A. W. Shaw Company, Chicago. A manual outlining the procedure for developing,

SOCIETY, a weekly journal evaluating and installing measurement methods in vocational selection. A book not only for the em-

covering the field of education ployer anid applicants, but for those who give voca- tional and educational cotunsel.

and its public service. China: Land of Famine. By WALTER H. MAL-

If this much-quoted and widely- LORY. 191 pp. $4.00. American Geographical Society, N. Y.

discussed periodical is not already An interesting and thorough study of China's

a regular visitor at your office, major problem nwritten by the Secretary of the China a regular visitor at your office, Tnternational Famine Rtelief Commission. In simple

will find the special language the writer sets forth the reasons why fam-

you wlll find the speclal short- iS)Ps are so prevalent in China and how he believes

time offer a convenient way of they can be prevented.

making its acquaintance. A dol- The Origin of Birds. By GERHARD HIEILMANN. 204 pp. $7.50. D. Appleton and Company, N. Y.

lar bill, which may be mailed at A seienitific stuidy of prehistoric flying creatures in

the risk of the publishers, will their relation to the birds of the present. Illustrated

brin., you thirteen issues. with two plates in color and 149 photographs and bring you thirteen issues. figures from drawings by the author.

$5.00 a Year-15 Cents a Copy Symbionticism and the Origin of Species. By

IVAN E. WALLIN. $3.00. Williams and Wilkins

THE SCIENCE PRESS Company, Baltimore.

Grand Central Terminal, New York, N. Y. A quantitative stuidy in demonstration of the living

nature of the mitochondria followed by an attempt

to explain the origin of species on this basis.

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Page 6: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xiii

"A Glass in FOR THE the Pocket is r VEST POCKET B oogical Sciences Worth Two BINOCULARS at Home." .5X Naturalists' Supplies

Microscope Slide Preparations "A most sur"ing

Preserved Material "A most surZnllnL7 _Display Material gloss; large ?eld, Lantern Slides sharp; in many eases Charts, Botanical and Zoological almost equal to my Microscopes, Microtomes and large heavy glasses." -J. M. Murdock. WIDE FIELD Accessories

Dissecting Instruments Fine for Geologist, Scientist, Hunters, Ex- Laboratory Glassware plorers or for family use. So light can be Chemicals carried in vest-pocket easily. A gen- $30 Bacteriological R.eagents

uine 5 power Jena Prism, with case. Catalogue pertaining to any of the above

Send for a pair of these Binoculars-satisfac- may be obtained on request. tion guaranteed or money back.

l20 Power Magnifier; adjustable to Mirakel; working Prompt Guaranteed distance 2Y4 '"-$2.50 extra. Service o Quality Write for Circular "A"

ANTHONY FIALA New York Biological Supply Co. FIALA OUTFITS, Inc. General Supplies for the Biological Sciences

25 Warren St. New York 34 UNION SQUARE, NEW YORK CITY

The WVatt-s Mirror Blades Every Particularly hard and tough Laboratory blades, with keen uniform edgesNed This

for

Microtome Work ($1.00 per packet of 5 blades, postpaid. Either Gillette type or Auto-strop type.)

The 'Watts Spiro Sharpening Ma- chine for keeping the edges of these Victor Interval Timer unusual blades in condition is also available. ($6.75, postpaid.) with Automatic Alarm

An ideal Shaving Service for yourself Measuring time in periods ranging from or friend. An inyestment in both Satis- 15 seconds to 2 hours faction and Economy. Price $X50

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Mass., U. S. A. Toronto, Canada. VICTOR X-RAY CORPORATION

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Page 7: Back Matter

xiv THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

I AMERICAN MEN OF SCIENCE A BIOGRAPHICAL DIRECTORY EDITED BY J. McKEEN CATTELL

A fourth edition of this book is now in preparation. There are only left about 25 copies of the third edition which is an invaluable work of reference for libraries and for all having relations with scientific men. The first and second editions were sold out before a new edi- tion was printed. There are many who need the third edition and should order it now.

The third edition of the Directory contains about 9,600 sketches as compared with 4,000 itn the first edition and 5,500 in the second edition. The work should be in the hands of all those who are directly or indirectly interested in scientific work.

(1) Men of science will find it indispensable. It gives not only the names, addresses, scientific records and the like of their fellow workers, but also a useful summary of the re- search work of the country, completed and in progress.

(2) Those interested in science, even thou7gh they may not be professionally engaged in research work, will find much of interest and value to them in the book.

(3) All who have or wish to have relations with scientific men will find the book invalu- able.

(4) Executives in institutions of learning will use the book constantly. (5) Editors of newspapers and periodicals will find it to be one of the wvorks of refer-

ence that they wi7l need mnost frequently. (6) Libraries wvill find the book to be a necessary addition to their reference shelves.

Price, Ten Dollars, Net, Postage Paid

THE SCIENCE PRESS Grand Central Terminal, New York, N. Y.

The New Spencer Film Slide Service and Projector

Presented for Educators by Educators A tremendously enthusiastic reception has greeted

the new Spencer Film Slide Service prepared for edu- cators by educators. The library includes many sub- jects, all edited and arranged in the order of the cur- riculum.

Pictures follow one another on rolls of safe unbreak- able film slides. You can't mix them up-yet pictures change instantly, forward or back, by a single turn of a knob. And the cost of this new service is only one- tenth that of glass slides. SPENCER LENS CO.,* **

BUFFALO, N. Y. The new Spencer film slide delineascope is simple, Please send me full iiformation compact and easy to use. You can operate it with one

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Street .

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Page 8: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xv

Unvarying Accuracy Assured By the Purity of

LAMOTTE STANDARDS 11 N making tests of Hydrogen Ion Concentration, ab-

solute accuracy can be insured by using LaMotte Color Standards. These Standards are widely

recognized for their uniform purity. They have been adopted as standard equipment in some of the largest laboratories in the country. In making LaMotte Standards, special non-soluble glass is used. This prevents quick fading, which is caused by the ordinary glass used in most laboratories. Also, LaMotte Indicators are of the highest purity attainable and are unequalled in strength and -uniformity.

The use of LaMotte Standards saves time, labor and expense, and insures uniform, accurate results. Write for our interesting brochure on "The ABC of Hydrogen Ion Control" -sent free on request.

LAMOTITE ROULETTE COMPARATOR

The ideal set for determining Hydrogen Ion Concentration. Scientifically correct yet simple to operate. Invaluable to the 7 scientist, teacher, research worker and in $ many industries.

LAMOTTE CHEMICAL PRODUCTS CO.

422 Light Street Baltimore, Md.

Patent applied for

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Page 9: Back Matter

Zvi THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

IAMPLIFICATION I WITHOUT I ~DISTORTION

Ideas of reception have changed. A year or so ago the main thing was dis- tance, now it's quality or how well you can hear that counts.

Receivers have changed very rapidly in recent years. Radical developments have taken place and made receivers but recently purchased obsolete.

The best singers and music cannot be fully appreciated unless the audio end of your receiver embodies the new principles of audio amplification.

With the new theory and design of audio amplifiers the last great change in Radio reception has been made for some time to come. A set changed over now will last for a long time.

The Acme Apparatus Company have developed a new High Quality Audio Amplifier which is the result of many years of research and development.

With this new High Quality Amplifier a new sense of nearness is brought out with the joyous realization of how near to the real thing radio reception can be.

The addition of this amplifier to any set is a simple matter. Full size prints plainly showing the hook-up and layout dimensions have been prepared and may be obtained by sending 25 cents together with the coupon.

Acme Apparatus Co., Acme Apparatus Company DIptA2

Pioneer Transformer and Radio Enclosed please find $0.25 for full-size print

Engineers and Manufacturers of High Quality Am-

Name ................ Acme MA2 Transformer . $6.00 street

Z3 impedance and resistance unit $5.00 City ........State

A C M E q o r om pI,7~~~~~~~~~~~~~~~~~~~~~~~~~~.............cefion..............

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Page 10: Back Matter

LANA

PHOTO-MICROGRAPHIC OCULAR "PHOKU" A TTACHABLE to any standard of sharpness. By means of the

microscope. The specimen is "Phoku" photographic records are continually under observation, even made of specimens examined, with a during exposure. Optically and me- minimum expenditure of time and chanically correct, negatives of ex- money. It may be used with equal treme definition are obtained, which facility for photographing opaque (in- may subsequently be enlarged four or cluding metallurgical) and transparent five diameters, without apparent loss objects.

Price, $to8 f. o. b. New York

CARL ZEISS, INC. 485 Fifth Ave. New York

Pacdi. Coast Branch, 728 South Hill St., Loa Angeles, Calif.

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Page 11: Back Matter

Laboratory Apparatus and Supplies

PAIS PAN- ARIN EXPOSITION: EXPOSITION:

Eight Awards and Medals Gold Modal

Our General Laboratory and Museum Supplies Include: Scientific Apparatus and Instruments, Chemicals, Anatomical Models, Osteological

Preparations, Natural History Specimens and Preparations, Wall Charts, Mu- seum and Naturalists' Supplies, Glass Jars, Microscopes and Accessories.

Museum Cabinets (Yale Style) Biological and General Laboratory Supplies

THE KNY-SCHEERER CORPORATION OF AMERICA Dept. of Natural Science, I19-125 7th Ave.

G. Lagai, Ph.D. (Cor. I7th St.) New York City

BROOKLYN BOTANIC GARDEN MEMOIRS Volume I: 33 contributions by various authors on genetics, pathology, mycology,

physiology, ecology, plant geography, and systematic botany. Price $3.50 plus postage. Volume II: The vegetation of Long Island. Part I. The vegetation of Montauk,

etc. Pub. 1923. io8 pp. Price, $i.oo.

AMERICAN JOURNAL OF BOTANY Devoted to All Branches of Botanical Science

Established I914. Monthly except August and September. Official Publication of the Botanical Society of America.

Subscription, $7 a year for complete volumes only (Jan.-Dec.). Parts of volumes at the single number rate. Volumes I-13 complete, $io6. Prices of odd volumes on request. Single numbers, $i.oo each, post free. Foreign postage: 40 cents.

ECOLOGY Devoted to All Forms of Life in Relation to Environment

Established I920. Quarterly. Official Publication of the Ecological Society of America. Subscription, $4 a year for complete volumes only (Jan.-Dec.). Parts oi vol- umes at the single number rate. Back volumes I, 2, and 4-7, $5.oo each.

Single numbers, $1.25 post free. Foreign postage: 20 cents. GENETICS

A Periodical Record of Investigations bearing on Heredity and Variation Subscription, $6 a year for complete volumes only (Jan.-Dec.). Parts of volumes

at the single number rate. Single numbers, $1.25 post free. Back volumes 2-IO only, $7.oo each. Foreign postage: 50 cents.

Orders should be placed with THE SECRETARY, BROOKLYN BOTANIC GARDEN

IOOO Washington Ave. Brooklyn, N. Y., U. S. A.

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