Articles

 Time and Effort Reports Defended

Eugene P. Wigner
Science 19 January 1968: 255.
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 Survey: Justifying Research Support

Michael D. Reagan
Science 19 January 1968: 255.
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 Clarke's Third Law on UFO's

Arthur C. Clarke
Science 19 January 1968: 255.
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 Letters

Isaac Asimov
Science 19 January 1968: 255.
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 Spreading the Stipends

Richard A. Paull
Science 19 January 1968: 255-256.
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 The Draft: Tormenting Uncertainty

Lowell H. Hattery
Science 19 January 1968: 256.
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 Letters

James Munves
Science 19 January 1968: 256.
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 Letters

John L. Prather
Science 19 January 1968: 258.
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 Letters

John D. Alden
Science 19 January 1968: 258-259.
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 Letters

Werner A. Baum
Science 19 January 1968: 259.
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 Social Planning and Our Medical Schools

Irvine H. Page
Science 19 January 1968: 261.
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Ion Cyclotron Resonance Spectroscopy: Cyclotron double resonance provides a new technique for the study of ion-molecule reaction mechanisms

John D. Baldeschwieler
Science 19 January 1968: 263-273.
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 Radar Characteristics of Birds in Flight: Radar tracking of known single birds indicates a characteristic radar "signature."

Thomas G. Konrad, John J. Hicks, and Ella B. Dobson
Science 19 January 1968: 274-280.
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 Free Enterprise in Data Compilation: Committees are urged to open a freeway for compilers rather than to guide and channel their steps.

K. Way
Science 19 January 1968: 280-282.
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 The Brain Drain: New Law Will Stem Talent Flow from Europe

Philip M. Boffey
Science 19 January 1968: 282-284.
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 NEWS IN BRIEF

Science 19 January 1968: 283.
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 Dartmouth: Medical School Shows Good Recovery from 1966 Blowup

D. S. Greenberg
Science 19 January 1968: 284-286.
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 Strickman and Columbia: Inventor Seeks Return of Filter Rights

Robert J. Samuelson
Science 19 January 1968: 286-287.
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 National Academy of Sciences: Unrest Among the Ecologists

Luther J. Carter
Science 19 January 1968: 287-289.
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 East-West Visits: AEC Declines To Relax Rules for 200-Bev Lab

D. S. G.
Science 19 January 1968: 289-290.
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 Quasars. Their Importance in Astronomy and Physics. F. D. Kahn and H. P. Palmer. Harvard University Press, Cambridge, Mass., 1967. xii + 112 pp., illus. $5.50

James Terrell
Science 19 January 1968: 291-292.
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 Quasi-Stellar Objects. Geoffrey Burbidge and Margaret Burbidge. Freeman, San Francisco, 1967. xii + 235 pp., illus. $7.50. Astronomy and Astrophysics Series

James Terrell
Science 19 January 1968: 291-292.
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 Atlas of African Prehistory. Compiled by J. Desmond Clark. Maps by Eve Kemnitzer. University of Chicago Press, Chicago, 1967. Twelve maps and 38 overlays, boxed, with explanatory booklet (64 pp., illus.). $32

Nikolaas J. van der Merwe
Science 19 January 1968: 292.
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 The Rock Art of Texas Indians. Paintings by Forrest Kirkland, text by W. W. Newcomb. Jr. University of Texas Press, Austin, 1967. xiv + 239 pp.; 160 plates. $12.50

Alex D. Krieger
Science 19 January 1968: 293-294.
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 Rock Art of the American Indian. Written and illustrated by Campbell Grant. Crowell, New York, 1967. xiv + 178 pp., illus. $12.95

Alex D. Krieger
Science 19 January 1968: 293-294.
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 Radiation Chimaeras. D. W. van Bekkum and M. J. de Vries. Academic Press, New York, 1967. x + 277 pp., illus. $20

L. H. Smith
Science 19 January 1968: 294-295.
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 Scientific Method in Analysis of Sediments. John C. Griffiths. McGraw-Hill, New York, 1967. xii + 508 pp., illus. $17.50. International Series in the Earth and Planetary Sciences

R. A. Reyment
Science 19 January 1968: 295.
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 Structure and Habit in Vertebrate Evolution . G. S. Carter. University of Washington Press, Seattle, 1967. xvi + 520 pp., illus. $9.50

G. G. Simpson
Science 19 January 1968: 295.
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Milankovitch Hypothesis Supported by Precise Dating of Coral Reefs and Deep-Sea Sediments

Wallace S. Broecker, David L. Thurber, John Goddard, Teh-lung Ku, R. K. Matthews, and Kenneth J. Mesolella
Science 19 January 1968: 297-300.
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Pallasitic Meteorites: Implications Regarding the Deep Structure of Asteroids

Peter R. Buseck and Joseph I. Goldstein
Science 19 January 1968: 300-302.
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Utah Jet: A Vitrinite with Aberrant Properties

Alfred Traverse and Roger W. Kolvoord
Science 19 January 1968: 302-305.
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Venus: Uniformity of Clouds, and Photography

George T. Keene
Science 19 January 1968: 305.
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Mercury Has Two Permanent Thermal Bulges

Han-Shou Liu
Science 19 January 1968: 306-307.
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Search for a Frequency Shift of the 21-Centimeter Line from Taurus A near Occultation by Sun

D. Sadeh, S. H. Knowles, and B. S. Yaplee
Science 19 January 1968: 307-308.
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Binocularly Driven Neurons in Visual Cortex of Split-Chiasm Cats

Giovanni Berlucchi and Giacomo Rizzolatti
Science 19 January 1968: 308-310.
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Tetraploid DNA Content of Purkinje Neurons of Human Cerebellar Cortex

Lowell W. Lapham
Science 19 January 1968: 310-312.
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Visual Pigment Fluorescence

Anthony V. Guzzo and Gary L. Pool
Science 19 January 1968: 312-314.
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Histone Acetylation in Insect Chromosomes

V. G. Allfrey, B. G. T. Pogo, V. C. Littau, E. L. Gershey, and A. E. Mirsky
Science 19 January 1968: 314-316.
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Synthesis of Graphite and Hydrocarbons by Reaction between Calcite and Hydrogen

A. A. Giardini, C. A. Salotti, and J. F. Lakner
Science 19 January 1968: 317-319.
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Ethanol-1-C¹⁴ Metabolism in Alcoholics and Nonalcoholics

Jack H. Mendelson
Science 19 January 1968: 319-320.
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Binuclear Ion Containing Nitrogen as a Bridging Group

D. F. Harrison, E. Weissberger, and H. Taube
Science 19 January 1968: 320-322.
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Guinea Pig Complement: Two Active Forms of First Component

Louis G. Hoffmann
Science 19 January 1968: 322-323.
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Alcohol Dehydrogenase of Drosophila: Interconversion of Isoenzymes

K. Bruce Jacobson
Science 19 January 1968: 324-325.
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Titration Patterns of a Murine Sarcoma-Leukemia Virus Complex: Evidence for Existence of Competent Sarcoma Virions

Timothy E. O'Connor and Peter J. Fischinger
Science 19 January 1968: 325-329.
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Pregnancy Following Coital-Induced Ovulation in a Spontaneous Ovulator

M. X. Zarrow, P. S. Campbell, and J. H. Clark
Science 19 January 1968: 329-330.
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Intracerebral Saline: Effect on Memory of Trained Mice Treated with Puromycin

Louis B. Flexner and Josefa B. Flexner
Science 19 January 1968: 330-331.
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Auditory Sense in Certain Sphingid Moths

Kenneth D. Roeder, Asher E. Treat, and Jerry S. Vandeberg
Science 19 January 1968: 331-333.
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 Ranger VIII and Gravity Scaling of Lunar Craters

Henry J. Moore and Ralph B. Baldwin
Science 19 January 1968: 333-334.
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 Neural Communications: Experiment and Theory

D. M. MacKay
Science 19 January 1968: 335-353.
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