mimmi 4Ua

OCTOBER 20, 1950

NATIONAL ACADEMY OF SCIENCESABSTRACTS OF PAPERSPRESENTED AT THE

1950 AUTUMN MEETING

TECHNICAL PAPERS

COMMENTS AND COMMUNICATIONS

BOOK REVIEWS

NEWS AND NOTES

COMPLETE TABLE OF CONTENTS ON PAGE 3VOLUME 112, NUMBER 2912

AMERICAN ASSOCIATION FORADVANCEMENT OF SCIENCE

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11 SnCE, Vol. 112 . . . . ., _ _ _, ,__

2 SOIENCE, Vol. 112

AAAS EDITORIAL BOARD

(Terms ED re June 30, 1951)

hepBentley Glass Lorin J. Mullins

Vol. 112 No. 2912 Friday, October 20, 1950 Karl Lark-Horovitz Malcolm H. SouleHoward A. Meyerhoff

Chairman

Gladys M. KeenerExecutive Editor

F. A. Moulton, Advertising Representative

Table of ContentsNational Academy of Sciences-Abstracts ofPapers Presented at the Autumn Meeting,October 9-12, 1950 .......... ........................... 447

Technical PapersThe Hemolytic and Antihemolytic Activitiesof Various Centrifugally SeparatedFractions of Adult and Fetal Liver Cells:David B. Tyler ........... ............................ 456

Methanol Precipitation of Influenza Virus:Arden W.Moyer et al . .....................................

A Sex-linked Lethal Gene in the Fowl:K. Goodwin, F. B. Hutt, and R. K. Cole ...... 460

A Precision Method of CountingRadioactive Liquid Samples:Arthur J. Freedman and David N. Hume ...... 461

Effects of Ultrasonic Waves and NitrousAcid on the Production of ColloidalSulfur: Shichiro Akiya, Otohiko Nomoto,andSeiichi Okui ............ ........................... 463

A Simplified Recording Bubble Flow Meter:William G. Hammond, Chester Hyman,

andThomasE. Nelson ....................................... 465

Molecular Configuration and BiologicalActivity of Substances ResemblingAcetylcholine: J. H. Welsh and R. Taub ............ 467

The Photochemical Action of UltravioletLight on the Absorption Spectra of

Nucleic Acid and Related Substances:David Rapport and Attilio Canzanelli .................. 469

Contact Potentials of Evaporated Iron Filmsin Air and in Nitrogen at Low Pressure:Norman Hackerman and Leland L. Antes ............ 471

Improved Technique for Weighing Tissueswith the Cartesian Diver:

Jay A. Smith andMelvin Post .................................... 471

On the Structure of Morphine and itsDerivative Metopon:Lewis J. Sargent and Lyndon F. Small ............ 473

Streaming Birefringence of DenaturedOvalbumin: J. F. Foster and

Edward G. Samsa ............. .......................... 473

Comments and CommunicationsTaste Reactions to AntithyroidSubstances; The Big Lie;

Stressand Meaning .............. ...................... 475

Book ReviewsStellar Evolution; ElectronicMechanisms of Organic Reactions;Manual of Standardized Proceduresfor Spectrophotometric Chemistry .............................. 477

News and NotesStudents, Scientists, and

.....................................

Science, founded in 1880, Is published each Friday by theAmerican Association for the Advancement of Science at theBusiness Press, 10 McGovern Ave., Lancaster, Pa. Enteredas second-class matter at the Post Office at Lancaster, Pa.,January 13, 1948, under the Act of March 3, 1879. Accept-ance for mailing at the special rate postage provided for inthe Act of February 28, 1925, embodied in Paragraph (d-2)Section 34.40 P. L. & R. of 1948.

All correspondence should be sent to Science, 1515 Massa-chusetts Ave., N. W., Washington 5, D. C. The AAAS as-sumes no responsibility for the safety of manuscripts or for

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tion rates on request.

j

Just Published - Volume

METHODS. iIN MEDICAL RESEARCHEDITED BY RALPH W. GERARD, M.D.Professor of Physiology, University of Chicago

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The newest volume in this important series is now ready. In the words of one reviewer these uniquebooks are "commended to all who are interested in the recent developments in medical research andespecially to those who have chosen the noble way of an investigator."Sections and Associate Editors of Volume III are as follows: Genetics of Microorganisms (S. E. Luria);Assay of Neurohumors (J. H. Gaddum); Selected Psychomotor Measurement Methods (Walter R.Miles); Methods for Study of Peptide Structure (C. H. Li). 320 pages, illustrated. $7.00.

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An exploration from the observatory

Stellar EvolutionBy OTTO STRUVE

* One of the world's greatest astronomers discusses the sumof centuries of speculation on the probable course of evolutionin stars, and gives a full report of his own conclusions. Suffi-cient background is included to enable anyone with scientifictraining to follow the argument. Mr. Struve is Chairman ofthe Department of Astronomy at the University of California.

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MOISTURE REQUIREMENTS IN AGRICULTURE. Farm IrrigationBy HARRY BURGESS ROE, University of Minnesota. McGraw-Hill Publications in Agricul-tural Engineering. 413 pages, $5.50

Presents a detailed and complete treatise on moisture requirements in agriculture from the pointof view of irrigation engineering. Material has been drawn largely from the author's experi-ence in teaching professional students the principles and practices of soil-moisture regulation.

BOTANY. A Textbook for Colleges. New 2nd editionBy J. BEN HILL, Pennsylvania State Coll'Age; LEE 0. OVERHOLTS, and HENRY W. POPP,Pennsylvania State College. McGraw-Hill Publications in the Botanical Sciences. 690pages, $5.00

This book has been revised carefully in order to record advances in the field in recent years andto eliminate shortcomings revealed by teaching of the original edition. This revised edition treatsrecent advances in the science in photosynthesis, respiration, fermentation and enzymes, metabo-lism, hormones and vitamins, antibiotics, the use of "tagged elements", hydroponics, etc.

ELASTICITY. Proceedings of Symposia in Applied Mathematics. Volume IllEditor-in-Chief, R. V. CHURCHILL, University of Michigan. In press

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SCIENCE, Vol. 11210

Experiments will be conducted cover-ing the use and calibration of in-struments, the purification and sep-aration of radioactive materials frominert and other radioactive materials,measurement and use of carbon 14,pile activations, radioautographs,and the like. Seminars will includesuch topics as the use of radioiso-topes in animal experimentation, useof radioisotopes in human beings,principles and practice of healthphysics, design of radiochemical lab-oratories, and effect of radiation oncells.The Special Training Division can

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The Registry of Rare Chemicals,35 West 33rd St., Chicago 16, Ill.lists the following wanted chemicals:cuprous acetate, zinc ammonium ni-trite, molybdenum silicide, bariumferrocyanide, silver chlorate, potas-sium hexaniobate, tetracosane, alpha-bromoisocaproyl bromide, hemimel-litic anhydride, vinyl fluoride, 2,3-dichlorodiphenylamine, 2-methyl-5-n-butyl pyridine, 4-chloro-1,2-dimer-captobenzene, chloropentafluoroeth-

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The New York Botanical Garden-H. R. Kunhardt expedition hasleft for Venezuelan Guiana forstudies in the Guayana Highlands.Explorations will be concentrated inthe Orinoco headwaters, and studieswill be made particularly of Hauma-cari and Yacapana, two of thesandstone plateaus. Neither hasbeen explored botanically, and, as faras is known, Haumacari has neverbeen scaled. Bassett Maguire, cur-ator of the Botanical Garden, leftSeptember 23 and will later join theBritish Guiana Forest Department inan expedition to the easternmost endof the Pacaraima Range, terminat-ing with the Kaieteur Plateau. Mrs.William Phelps, Jr., of Caracas, hasbeen appointed a New York Botani-cal Garden collaborator for Vene-zuelan botany, in recognition of herassistance in studies of the GuayanaHighlands.

Nuclear charts showing approxi-mately 325 new kinds of atoms dis-covered or created during the pasttwo years by American scientists areavailable from Westinghouse Elec-tric Corporation 's School ServiceDepartment. The charts, a revisionof those published in 1948, areprinted in color on heavy stock, andconsecutively portray the basic par-

New General Electric Research Laboratory at "The Knolls," near Schenectady,N. a'., was dedicated on October 9 in the presence of members of the National

Academy of Sciences, which for the first tinme in its 88-year history, held its ses-sions in an industrial laboratory. (Abstracts of all the papers presented at thismeeting are being printed by SCIENCE in Its October 13 and October 20 issues.)

tidles in nuclear physics; how atomsare put together; natural and man-

made nuclear reactions; methods ofdetecting and measuring atomic en-

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tributions to nuclear science. Fur-ther information may be obtainedfrom Louis M. Stark, School ServiceDepartment, Westinghouse ElectricCorporation, East Pittsburgh, Pa.

Organized science at the world-wide level reaches its apex in theInternational Council of ScientificUnions, a federation of 10 separateinternational unions, and of the prin-cipal academic or research councilsof 42 countries. ICSU, an inde-pendent and private organization,has a working agreement withUnesco whereby the latter makesannual appropriations of some $200,-000, thus providing for a permanentstaff and for grants to various unionprojects. President of ICSU is A.Von Muralt, and the general secre-

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odesy and geophysics, geography,history of science, mechanics, phys-ics, and radio. The Executive Com-mittee, of some 20 members, meetsannually, and the General Assemblyconvenes once every three years.

SCIENCE, Vol. 112

Beginning with this issue,SCIENCE will adopt the systemof abbreviation used in theList of Periodicals Abstractedby Chemical Abstracts. Cita-tions of literature will notnecessarily be arranged inalphabetical order, but maybe listed, by number, in theorder of their mention. Inthe subsequent issues of thepresent volume, there will besome discrepancies in stylebecause of the number ofarticles already in type.

488