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Back Matter Source: The Scientific Monthly, Vol. 28, No. 6 (Jun., 1929), pp. ix-xvi Published by: American Association for the Advancement of Science Stable URL: http://www.jstor.org/stable/14814 . Accessed: 02/05/2014 18:49 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 130.132.123.28 on Fri, 2 May 2014 18:49:31 PM All use subject to JSTOR Terms and Conditions
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Page 1: Back Matter

Back MatterSource: The Scientific Monthly, Vol. 28, No. 6 (Jun., 1929), pp. ix-xviPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/14814 .

Accessed: 02/05/2014 18:49

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

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Page 2: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS ix

j HE Universal Laboratory ~ Mdel ultra-violet lamp

provides for precision work the Quartz Mercury Vapor Arce, long Tecognized as the richest available source of ultra-violet.

To aV

Assist You in Laboratory Experiments

U SE of ultra-violet ray has considerably widened the _VF t scope of research work. And laboratory workers are

obtaining especially valuable assistance from Hanovia Ultra-violet Lamps. The highly efficient construction of these lamps assures accurate quantity and finest quality

Ill[ANO X of ultra-violet rays. No doubt many of your experiments can be conducted

more successfully by the uise of a dependable ultra-violet ULTRA - VIOLET ray generator.

Write today, and find out how you can employ the iI T1 IPPS Universal Laboratory Model in your work. The Director

of the Hanovia Laboratory will be happy to send you full data. Hanovia Chemical & Mfg. Company, Dept. J-13

Chestnut St. & N. J. R. R. Ave., Newark, N. J.

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Page 3: Back Matter

x THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

New York's Newest H otel

Portraits as men like them

g kti. . t 1 ~227 West 45th St. Photographs of Distinction 2t 45thd

St. At Broadway

507 Fifth Avenue New York Vanderbilt 7400

In the Grand Central Zone Hotel Adjacent to every Activity

600 Bright Sunlit Rooms MONTCLAIR Each with Bath, Elec-

Lexington Avenue tric Fan, Ice Water.

49th to 50th Sts. Single Room & Bath $3.00 NEW YORK CITY Double Room & Bath $4.50

Just Completed and Opened 8oo Rooms 8oo Baths Exceptional Restaurant

Each with Tub and Shower and Luncheonette Radio in Every Room Wire at our Expense

Room & Bath for Reservations

tub and shower, f.or 2 persons 1 1D

S. Gregory T Taylor, '11 ..Sfed

president. F.D ofed Oscar W 1 Rielhards8, 113 M 4anaging

manager*1~~~~~~~~~~i 1 YI ~~~Director

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Page 4: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMIENTS xi

Brake es eter For Accuracy, and Maintained Accuracy.

A Certificate of Test is furnished with each Meter

The Tapley Brake Testing Meter may bhe used at any speed above 10 miles per hour, whether on level road or not.

The large easily read scale is held at the cor- rect reading until released by the operator.

For use by Officials, Garages, Service Stations, Manufacturers. You will see these Tapley Meters in use wherever accurate Technical Tests are made, and by those whose success is due to securing the

-_____________________ best equipment and the best investment.

It is essential to firmly fix any Write for Details meter for brake measurement to a motor vehicle in order to eliminate Error. E. C. CHESWELL

A quick acting clamp is also Melrose Highlands (77), Mass. available which attaches the Tapley Meter firmly to any running board U. S. A. Distributor for Messrs. Tapley & Company, Totton, with one upward movement of the Southampton, England. hand; for use where continuousSotapn,Egnd tet hand,ore mde. wherecontinuousPacific Coast Distributors: GiUespie Sons, 220 First St., San

Francisco, and 919 West 12th St., Los Angeles. _ _

Scientific Instruments since 1819 Commodore Byrd's Expedition wires for I1'i4ARA. FIALA SLEEPING BAGS

OFTEN YOU NEED ALWAYS YOU WANT "Send to me, care ex- QUALITY INSTRUMENTS for your work pedition Dunedin, NZ,s We offer the following Instruments two sleeping suits size which are used for scientific work in 40; two combinatiols 3, all parts of the globe and which have sleeping bags. Shipment our full guarantee as to highest quality Rush. and perfo-rmance.Ruh KERN CAMERAS were designed at the _ c C e W L suggestion of scientists and have proved s entifically Corret-wa, Light their worth in scientific and pictorial ' Weight-Sanitary. Best for out- $25J work. -- door sleeping. Tour and Camp.s KERN PRlISM BINOCULARS with SPECIAL: Light weight 5 lbs.- their optical correction of the highest 80" "1Llama"1 Bag and cover; quality and their mechanical perfection complete............ $lli are chosen by governments and indi- Miraike 7X-6 oz. Vest Pocket, 'Viduals as standards. Prism Binoculars....... $55 KERN OPTICS, such as objectives, RZeiss Wide-Angle "D Delt"entis " lenses, prisms and so on can be fur- eiss8 x 30 ..Wide-Angl " i $s nished for special purposes. Fiala "Miniature" 8 x 24; 10 oz. $34 KERN SURVEYING INSTRUMENTS Sports Compass - Luminous are of modern design, small, precise Dial .... $3.50 and rugged and include all groups T11e smallest port- from Explorers' Transits to Astronom- able electric light ical Universal Instruments. plant in the world. KERN DRAWING SETS can be replen- A few turns of the ished in any country in the world. handle, every 3 min- Their precision is lasting. utes, makes it run

continuously. No Detailed Information on any of the batteries; not af- above Kern lines will be furnished fected by dampness, needs no adjusting; guaranteed gladly upon request. for a year. 8" lolug. The finest Flash Light made

-everyone needs it. Price, $10 postpaid. 136 Liberty St., ANTHONY FIALA OUTFITS,

1ERNC MPAN New Yorkc, N. Y. IityleUPr e INC. 25 Warren St. Just off Cty HallPark NewYork City

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Page 5: Back Matter

xii THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

A niche in the en- / ~~~chanting Palm Court of

/,The Roosevelt, where bright society gathers of after-

I / ~~~~~~~noons for badinage and tea.

eauty of a_ppointment, perfection of service, inviting convenience and comfort-these things the management may contribute to a great metropolitan hotel. But it is the guests, themselves, who esta/blish its Atmosphere . . . Cultivated people who make The ROOSEVELT their favored place of residence find here a spirit and a setting which are in perfect acccord with their own traditions of good taste.

Connected by private passage with Grand Central and the subways . . Complete Travel and Steamship Bureau . . "Teddy Bear Cave," a supervised playroom for children of guests . . Special garage facilities.

BEN BERNIE and his ORCHESTRA in the GRILL

MADISON AVE. at 45th St. EDWARD CLINTON FoGG

NEW YORK Managing Director

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Page 6: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xiii

Accurate Stopwatches fienuine Swiss Make

~~~ .~~~~~~ ~No. 70960 A high grade 15 jewel timepiece w 1 t h stopwatch attachment,

start, stop, and fly-back ................... $8.00 153 West 23rd Street, New York, N. Y.

FOR THE BIOLOGICA1L Biological Sciences SUPPLIES

Naturalists' Supplies tS Ot Microscope Slide Preparations Zoological Groups Preserved Material Embryologic Models and Museum Preparations Embryologi- Slides Lantern Slides cal Charts, Botanical and Zoological Botanical Life Microscopes, Microtomes and Materials Histories

Accessories Dissecting Instruments Drosophila Philippine Laboratory Glassware Cultures Land Shells Chemicals Bacteriological Reagents

A Good Book on Seashore Ecology. Ver- rills Vineyard Sound Report. $3.00.

Prompt Guaranteed Catalogs will be sent on request Service 1 Qualtity Address all correspondence to

Geo. M. Gray, Curator

New York Biological Supply Co. Supply Department

General Supplies for the Biological Sciences Marine Biological Laboratory 34 UNION SQUARE NEW YORK CITY Woods Hole, Mass., U. S. A.

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Page 7: Back Matter

xiv THE SCIENTIFIC MONTHLY-ADVERTISEMlENTS

Complete Equipment for

Explorers, Scientists, Engineers, Hunters and Travelers

We have The only Equipped house

many L in the

Expedi-U.S tions whert From every

the Poles infi to the myb

Equator o btained

Gurley's Transits, Levels, Current Meters; Paulin Altimeters; Binoculars, Microscopes, Cameras, Motion Picture Outfits; Tents and Camp Requi- sites; Sleeping Bags; Saddlery; Outdoor Clothing for every climate; Boats; Arms and Ammunition, etc.

We have recently equipped two expeditions, for Greenland, one for Persia and others for Venezuela, Peru, Bolivia, and Brazil. Some of these, exploring parties we equipped with practically everything they needed from engineering instruments to, rifles-, am-munition and food. Our tents, made of Equatorial Waterproof Cloth, have stood the sun of the tropics and the freezing blasts of the, Polar regions.

Let us furnish estimates-write us your wants.

Catalogs and Testimonial Letters on request

ANTHONY FIALA 25 WARREN STREET NEW YORK CITY

"Look for the sign of dt}e Polar Bear"

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Page 8: Back Matter

THE SCIENTIFIC MONTHLY-ADVERTISEMENTS xv

Fl6owers and Insects By

CHARLES ROBERTSON

About 225 pp. $3.00

"Insects are of the greatest use to man as flower pollinators,'" says Professor F. Balfour-Browne in his book on insects. "The plants provide pollen and liectar as food and drink for the insects and in return, the insects carry out the pollination, and thus the visits to flowers are of advantage to both parties. "

"Onie might almost imagine that both parties were actually conscious of this, be- cause flowers have undoubtedly become adapted to insects, and insects have become modified in connection with their visits to flowers."

The author of "FLOWERS AND INSECTS" has made a special study extending over many years of insect visits to flowers.

Beginning September, 1887, and ending July, 1899, 7,817 visits to 278 insect flowers were recorded by him. In the present work, these visits are summarized, revised and increased until there are 15,172 visits of 1,288 insects and one hum- ming bird to 441 insect flowers. There are 14 visits -to wind flowers and 146 visits to extra-floral nectaries. The 15,172 visits to insect flowers given here are to be compared with 5,231 in Mueller's "Fertilization" and 8,491 in his "Alpenblumen. " Mention is made of the types of 232 species of insects and the flowers on which they were taken. The time of blooming of the flowers, the time when the observations were made, the flower class and the color are recorded.

This book is printed and offered for sale by

THE SCIENCE PRESS PRINTING COMPANY

Lime and Green Streets Lancaster, Penna.

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Page 9: Back Matter

xvi THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

A Product of X TZ Precision

A 7-RAQ-l

The excellent work of 30 the j1- Camera evi-

sages from members of

_RC PA Stt zC

You may never have occasion to use your cates of the Camera sold by lead- camera in the arctic or torrid regions, but ing photo supply dealers. the same mechanical and optical precision The smallest roll film camera with a Focal- that guarantees 's unfailing ser - Plane shutter. Exposures of 1/20 to 1/500 vice under the most diffiCult conditions see. Equipped with the famous Elmar assures yrou of liner pictures everywhere Anastigmat F 3.5, 50 mm. lens. -every time. There are no speciabl Thirty-six pictures on a single load of Se Cameras. Those accompany- standard Cinema film. Enlargements to 12"

ing the Byrd Expedition are but dupP- x 18" or more. Screen projection.

. l _ ~~~~~~~~~Leading photo sup-

E. LEIZ Inc Agen6

ftothe P: if orst

E. L IZOR, INc. CA &11 w . No i et

NEW YCAK, N. YERM AosDANgee,Clf

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Page 10: Back Matter

ZEISS OPTICAL INSTRUMENTS

Z EISS Prism Binoculars, in addition to their bril-

liant luminosity and large field of vilew., are dust- and mois- ture-proof, a factor which can hardly be over-emphasized. With supplementary lens at- tachments they are instantly convertible into Telescopic Magnifiers, having a working distance of about 8 inches.

Zeiss Ikon Cameras, fitted with Zeiss Tessar Lenses, take ex- cellent pictures, even under * conditions, where other cam- W eras fail. Zeiss Tessar Lenses and Compur Shutters are standard equipment on all, ex- cept the Junior Cameras. All models, having double bellows extension, may be used with the Zeiss Proxar and Distar supplementary Lenses.

Catalogues will be sent on request

CARL ZEISS, INC. 4 8 6 F; If t h Av e n u e 728 So. Hill Street N E W Y 0 R K1 L LO S A N G E L E S

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Page 11: Back Matter

LAMOTTE-MORGAN SOIL TESTING SET This handy onutfit is based on the indi-

cator method and is designed for accu- rate, rapid work in determ-ining soil reactions. Can be used on soils of any texture and any moisture content, except very wet clay soils. Tests can be made in from two to five minutes and results are acc-urate to 0.2 pH. Inval-uable to agricultural schools, experiment stations,

florists, nurserymen, and all inter- ested in the study of plants and soils.

Each set includes complete in- structions, color chart, and La- Motte Soil Handbook containing an extensive list of plants with their soil preferences.

rrice $10.00 f.o.b. Baliimore

LaMotte Chemical Products Co., 422 Light St., Baltimore, Md., U.S.A.

Laboratory Apparatus and Supplies

PARIS PAN-AMERICAN EXPOSITION: EXPOSITION:

Eight Awards and Medals Gold Medal

Our General Laboratory and Museum Supplies Include: Scientific Apparatus and Instrutnents, 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, IO-I4 West 25th Street

G. Lagai, Ph.D. New York City

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