SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's...

9
SCIENCE NEW SERIES SUBSCRIPTION, $6.00 Vol. 101, No. 2620 FIRTIDAY, MARChI 16, 1945 'SSNGL~E COPIIn , .15, The Bausch & Lomb LRM Balopticon provides the highest degree of versatility in illustrating lectures in any scientific field. Projecting equally brilliant, clear pictures from slides or opaque objects, it makes possible the use of any illustrative material includ- ing printed matter, photographs, or actual speci- mens. Preference rating required for delivery. Bausch & Lomb Optical Co., Rochester 2, N.Y. tie Publishled weekly by the American Association for the Advancement of Science at Lancaster, Pa. Eutcrcd (iS sud cltass mottter July 18, 1923 at the Post Odfce (it Lanicaster, Pa., unsider the Act of March 3, 1879.

Transcript of SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's...

Page 1: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

SCIENCENEW SERIES SUBSCRIPTION, $6.00Vol. 101, No. 2620 FIRTIDAY, MARChI 16, 1945 'SSNGL~E COPIIn , .15,

The Bausch & Lomb LRM Balopticon provides thehighest degree of versatility in illustrating lecturesin any scientific field. Projecting equally brilliant,clear pictures from slides or opaque objects, it makespossible the use of any illustrative material includ-ing printed matter, photographs, or actual speci-mens. Preference rating required for delivery. Bausch& Lomb Optical Co., Rochester 2, N.Y.

tie

Publishled weekly by the American Association for the Advancement of Science at Lancaster, Pa.Eutcrcd (iS sud cltassmottter July 18, 1923 at the Post Odfce (it Lanicaster, Pa., unsider the Act of March 3, 1879.

Page 2: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

2 SCIENCE-ADVERTISEMENTS VOL. 101, No. 2620

STUDIES ON THEANOPHELINE COMPLEXOF WESTERN AMERICA

By THOMAS H. G. AiTKEN

University of California Publicationsin Entomology

Volume 7, No. 11, pp. 273-364,39 figures in text

January 11, 1945

Paper, $1.25

UNIVERSITY OF CALIFORNIAPRESS

Berkeley 4 Los Angeles 24

Please address all communications to. the Berkeley office

PROJECTION EQUIPMENTAVAILABLE

IMMEDIATE DELIVERY

Auditorium Color Slide Projectorfor 2 x 2" and 3/4 x 4" slides

This projector has an optical system to give ex-cellent results with both 2 x 2" and 3V4 x 4" slides.It is air cooled and has a 750w bulb.

All other types of projection equipment also instock in addition to Spencer and Bausch & Lombmicroscopes.

JARRELLASH COMPANYMANITFACTUIJERS-IMPOETETIS-DEALERS

165 Newbury Street Boston 16, Mass

i--LANGUAG4EjIS POWER

. .. Forge ahead, win specialassignments, promotion, bet-',ter job in global peace timeopportunities through abilityto speak a foreign language.

MASTER A NEW LANGUAGEquickly, easily, correctly by

LI N@UAP HONEThe world - famous Linguaphone ConversationalMethod brings voices ol native teachers INTO YOUROWN HOME. You learn the new language byLISTENING. It's amazingly simple; thousands havesucceeded.HCME-STUDY COURSES IN 29 LANGUAGES

Send for FREE book-LENGUAPHONE INSTITUTE31 RCA Building, New York 20, N.Y. * Circle 7-0830

LINGUAPHONE INSTITUTE,37 RCA Bldg., New York 20, N.Y.Send m& the FREE Linguaphone Book.Name ..........................................Address...........t........... ci tyLanguage Interested.............................

Exposure Determinationin Photomicrography

by direct light measurement in plane of image

PHOTOVOLT Electronic Photometer MOD. 512Also suitable for epectrophotometry, densitometof spectrographs and X-ray diffactlng negatives,measurement of Iluminescenee and fluorescence,ultraviolet radiation and absorption.

Now available with interchangeable sear units, forinlra-red, visible, ultraviolet as far as 200 milimlcrons.

Write for literature

PHOTOVOLT CORP.95 Madison Ave. NOw York 16, N. Y.

2 SCIENCE-ADVERTISEMENTS VOL. 101, No. 2620

Page 3: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

SCIENCE-ADVERTISEMENTS 3

/.:.P{ 000

Leading brands of laborutoup SupphiC.he[aring fantiliar trade marks of the coumtry'souttistandinvg mnanufacturers are brought to) sou

through tenco, together ssit apparatus oif (:¢enc,own manufacture. The requirements of scontdedevelopment, control, and research arc served bestby brands of highest quality. Fur dependable prod-ucts from -e'liable souThrces, tpehifythese brands:

C(orning's "Px rex"&&¾cot"' Ware"Baker's \naly7zed-Kimble's "xax" and "Normatx-Spencer Optical InstrumentsCoors PorcelainCenco Scientific Apparatus

Your needs are otur r spmndbility.t

.CENTRAL SCIENTIfIC COMPANYitttNTF-t IN$Mf a t.tdOt ASPPtATU§

NEWYORK TORONTO encA~e l~tiON SA. tRANOSCO

MIARCH 16, 1945

111C .. .`

t; I`

Page 4: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

4 SCIENCE-ADVERTISEMENTS2620

LABORATORY~STIRRERS

With COMPLETE Speed Control

7605

Price as

illustrated =

$I4.95

Laboratory Apparatusand Supplies of all Kinds

Inquiries Invited

* Rheostat control from 0 up.* Regular standard motor suitable for continuous

service i1OV.* Plenty of power -will stir anything up to

molasses.* Fume resistant motor.

* Steel support rod.* Can be clamped to any standard laboratory

support.* Rugged chuck-Cadmium plated for 1/4" rod.

* Operates on either A.C. or D.C. 11oV.

4 SCIENCE-ADVERTISEMENTS VOL. 101, No. 2620

F

thbl:

In

Page 5: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

SCIENCE-ADVERTISEMENTS 5

TODAY'S students must compete with tomorrow'sconditions- with war workers trained by modern audio-visual

methods, with returned service men who have been taught to learnrapidly and efficiently. Now it is more important than ever to make

available to students the means and facilities for faster, betterlearning offered by Victor 16mm Sound Motion Picture Equipment and

specialized films. In vocational studies, for manual training, forthe sciences, social studies and general education, Victor 16mm Magic

is the ideal teaching and training aid. Sturdy in construction,most simple to operate, highest in quality of sound and, picture

reproduction, Victor, in audio-visual education was first yesterday,is foremost today and will remain the leader tomorrow.

VICTOR A"NIMATOORAPH CORPORATIONHome Oice and Factory: Davenport. towa

New York (18). McGraw Hill Bldg., 330 W. 42nd St.Chicago (1). 188 W. Randolph

A-1

MARCH 16y 1945

Page 6: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

CRYSTALLINE BIOTIN

* Standardized s1oltions of crystalline biotin for microbiological assayprocedures are available in following quantities:

1 ml. ampul-25miLogam 1.00 each.... 7.50 dozenSince crystalline biotin is now more readily available, the special ;MACObiotin concentrates will be discontinued when present supplies are exhausted.

Forfuwther information, write

GENERAL BIOCHEMICALS, fINCe * CHAGRIN FALLS, OHIOIIV1ISIWYCTH INCORPORATED

Page 7: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

PURE Vitaminsproducts of Merck Research

Merck research has been directly responsible for many im-portant contributions to the _synthesis, development, andlarge-scale production of individual vitamin factors inpure form.

In a number of instances, the pure vitamins may be con-sidered to be products of Merck research. Several wereoriginally synthesized in the Merck Research Laboratories,and others have been synthesized by Merck chemists andcollaborators in associated laboratories.

Because most of the known vitamins have now beenmade available in pure form, effective therapy of specificvitamin deffciencies can be conducted on a rational andcontrolled basis, under the direction of the physician.

You are invited to write for literature

M E R C Kcontributions1934-Ascorbic Acid Merck wasmade available by Merck & Co., Inc.1936- Crystalline Vitamin Bi wassynthesized in the. Merck ResearchLaboratories.1937-Vitamin B1 (Thiamine Hy-drochloride Merck) was made com-mercially available.1938-Nicotinic Acid Merck(Niacin) and Nicotinamide Merck(Niacinamide) were made available.1938- Riboflavin Merck was thesecond pure crystalline vitamin toreach production during that year.1938-Alpha-Tocopherol (VitaminE) was identified and synthesized byMerck chemists and their collabo-rators in other laboratories.l939- Crystalline Vitamin Bi wassynthesized in the Merck ResearchLaboratories.1940-Vitamin B6 HydrochlorideMerck (Pyridoxine Hydrochloride)became available.1940-Alpha-Tocopherol Merck(Vitamin E) was made commerciallyavailable.1940-Vitamin K1 Merck (2-Me-thyl-3-Phytyl-l, 4-Naphthoquinone)was made available.1940-Menadione Merck (2-Methyl-1, 4-Naphthoquinone), apure compound having marked Vita-min K activity, became available.1940 -Crystalline PantothenicAcid, member of the Vitamin BComplex, was identified and synthe-sized by Merck chemists and theircollaborators in other laboratories.1940 -The Calcium Salt of Dex-trorotatory Pantothenic Acid wasmade available by Merck & Co., Inc.1943-Crystalline Biotin, menfberof the Vitamin B-Complex, was syn-thesized in the Merck Research Lab-oratories.1944-Biotin Merck was madeavailable by Merck & Co., Inc.

Merck SP Co., Inc. now manufac-tures all the vitamins commerciallyavailable in pure form, with the ex-ception of vitamins A and D.

'MERCK & CO., Inc. ns4Sy 6i4 RAHWAY, N. J.

Page 8: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

8 -WE -DERIEET VOL 10,N.22

£ee~lta£eedd44ma eThe IMPROVED WELCH FORE PUMPfor diffusion and molecular-drag pumps

Unexcelled For Vacuum DistillationsFREE AIR CAPACITY100 L. PER MINUTE.-

Over 500 ml.per second.

at 5 microns

A DUO-SEALVACUUM PUMPIdeal for use as a

fore pump

Has the manyDUO-SEALAdvantages

LONG LIFEImproves with constantcunning.

QUIET IN OPERATION NWo. 1403-BNo thumpinpg din.

REQUIRES LITTLE OIL Guaranteed Vacuum-5 micronsLOnl lUN Gliters. Free Air Capacity-100 liter per minuteOnly 375 R.P.ME Cat. No. 1403 Duo-Seal Vac- H.P. 110 Volt A.C. Motor

FASTER. PUMPING uum Pump......$100.00 mounted on Base....$145.00At all pressures. . Cat. No. 1403-B Withm nLOW POWER CONSUMP-TION PATENTED: DUO-.SEAL of~No oil can back into the /system.

This Valuable Booklet /.-FREE.

Write for Your Copy.Its 32 pages tell all about

Welch Duo-Seal Pumps andVacuum Technique.

VW. M. WELCH SCIENTIFIC COMPANYEstablished 1880

1517 Sedgwick Street Chicago 10, Illinois, U. S. A.

8. VoL. 101, No. 2620SCIENCE-ADVERTISEMENTS

Page 9: SCIENCE€¦ · SCIENCE-ADVERTISEMENTS 5 TODAY'S students must compete with tomorrow's conditions-with warworkers trained bymodernaudio-visual methods, with returned service menwhohave

SCIENCEVOL. 101 FRIDAY, MARCH 16, 1945 No. 2620

The Essential Need of Fundamental Research for monal Influence: FERN W. SMITH. Quinine ActionSocial Progress: DR. ALAN GREW .......................... 257 in Bacterial Growth and Disinfection: Da. FRANK

The Status and Problems of Research in the Native H. JOHNSON and Da. ISAAC LEWIN. Corn as anLanguages of South America: DR. J. ALDEN MASON 259 Etiological Factor in the Production of a Nicotinic

Obituary: lAcid Deficiency in the Rat: DR. W. A. KREHL, DR.Oscar Floyd Poindexter: HELEN M. MARTIN. L. J. TEPLY and DR. C. A. ELVEHJEM .............................. 276Deaths and Memorials ................ 264 Scientific Apparatus and Laboratory Methods:

Scientific Events: Methods for Determining Refractive Indices inEndowment of the School of Chemical Engineering Polarised Light Microscopy: DR. PHILIP W. WEST.at the University of Cambridge; The John Wesley Arrangement for Drying Proteins from the FrozenHyatt Award; The Fourth Annual Science Talent State: DR. WALTER H. SEEGERS ............. .............. 283Seazrch; In Honor of Professor Dugald C. Jackson 266

Scientific Notes and News.................................267 ScienceNews.10Discussion:

Blancan as a Time Term in the Central GreatPlains: PROFESSOR MAXIM K. ELiAS and OTHERS. SCIENCE: A Weekly Journal, since 1900 the officialSpinach and Bone Formation: DR. ROE E. REM- organ of the American Association for the AdvancementINGTON and DR. CECIL L. SMITH. Phosphorescent of Science. Published by the American Association forTexas Earthworms: DR. CYRUS N. RAY. Compara- the Advancement of Sience every Friday at Lancaster,tive University Strength in Scientists Starred in Pennsylvania."American Men of Science," V-VII: PROFESSOR Editors: JOSEPHINE OWEN CATTELL and JAQUESSTEPHEN S. VISHER. The Society for Freedom in CATTELL.Science: JOHN R. BAKER and OTHERS .............................. 270 Policy Committee: MALCOLM H. SOULE, ROGER ADAMS

Scientific Books: and WALTER R. MILES.Climatology: R. G. STONE. Analytical Geometry: Advertising Manager: THEO. J. CHRISTENSEN.PonEssoR H. S. M. COXETER. Colorimetric Deter-mination of Traces of Metals: DR. JAMES I. HoFrF- Communications relative to articles offered for publication

MAN.273 should be addressed to Editors of Science, 34 Gramercy Park.New York 3, N.Y.Special Articles: Communications relative to advertising should be addressedOn the Nature of Refractoriness of Certain Gram- to THEO. CHRISTENSEN, Advertising Manager, SmithsonianNegative Bacilli to Penicillin: DR. GREGORY Institution Building, Washington 25, D. C.Negatie Baclli t Penicllin:DR. GEGORYCommunications relative to membership In the AssociationSHWARTZMAN. The Changes in Bat Kidney Co- and to all matters of business of the Association should becarboxylase Associated with the Injurious Effects addressed to the Permanent Secretary, A.A.A.S., Smithsonianof dl-Serine: DR. Wm. H. FISHMAN and.WM. M. Institution Building, Washington 25, D. C.GOVIER. Castration Effects of the Inherited Hor- Annual subscription, $6.00 Single copies, 15 cents

THE ESSENTIAL NEED OF FUNDAMENTALRESEARCH FOR SOCIAL PROGRESS1

By DR. ALAN GREGGTHE ROCKEFELLER FOUNDATION

IF there be some measure of truth in the observationthat children seek the unknown but adults fear it, thenresearch is a kind of fountain of eternal youth, forresearch, whose purpose is to meet the unknown, pro-vides our minds with the perennial freshness and de-lighted curiosity of youth. In meeting here to-dayto honor the National Research Council we are happyto celebrate an institution that has brought knowledgeto youth and youth to knowledge. We seek to honorthe National Research Council for its work, begun in1916 and still continuing, in the furtherance of re-search work in the United States of America.Yet praise is not what research needs: it needs1 Address delivered on the occasion of the presentation

of the American Pharmaceutical Manufacturers Associa-tion award to the National Research Council, December11, 1944 (Hotel Waldorf-Astoria, New York City).

better understanding. Unless the nature and valueof research is more widely and more intelligentlyunderstood it will not flourish in our democracy. Re-search requires discrimination of a high order andtenaciously loyal support. Research does not employmagic: it calls for observation, experiment and rea-soning. It is not hidden: few human activities areso accurately recorded or so freely communicated.It is not mystical: it rests upon experience and clearthinking. It is not the plaything of scholars: it isthe laborious, costly, incessant, painstaking occupa-tion, and preoccupation, of imaginative men andwomen who are humbly but actively dissatisfied witheven the most that is yet known about men and things.

Unless we are prepared in the immediate future toinitiate, pursue and support all kinds of research,