Articles

 Discovery to Patent to License

Willard Marcy
Science 6 December 1968: 1075.
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 Lebensraum

Arnold I. Dumey
Science 6 December 1968: 1075.
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 Creaking and Rusting Liberalism

Robert Liberman
Science 6 December 1968: 1075.
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 Letters to the Editor

D. A. Begelman
Science 6 December 1968: 1075-1076.
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 Protesting Mathematicians

David Sinclair
Science 6 December 1968: 1076.
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 Endangered Nonhuman Primates

Edward I. Goldsmith
Science 6 December 1968: 1077.
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 A New Base for Political Support of Academic Science

Philip H. Abelson
Science 6 December 1968: 1079.
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 Variable Galaxies

T. D. Kinman
Science 6 December 1968: 1081-1085.
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 Hallucinogenic Plants

Norman R. Farnsworth
Science 6 December 1968: 1086-1092.
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 Food Production in Prehistoric Europe

H. T. Waterbolk
Science 6 December 1968: 1093-1102.
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 Nuclear Weapons . .

Luther J. Carter
Science 6 December 1968: 1102-1105.
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 And CBW

Bryce Nelson
Science 6 December 1968: 1102-1108.
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 Space: Europe Makes Move toward Setting Up a Central Organization

D. S. Greenberg
Science 6 December 1968: 1108-1109.
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 APPOINTMENTS

Science 6 December 1968: 1109.
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 Pleistocene Extinctions. The Search for a Cause. Proceedings of the 7th congress of the International Association for Quaternary Research, vol. 6. P. S. Martin and H. E. Wright, Jr., Eds. Yale University Press, New Haven, Conn., 1967. x + 453 pp., illus. $12.50

Olaf H. Prufer
Science 6 December 1968: 1110-1112.
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 Greek Mathematical Thought and the Origin of Algebra. Jacob Klein. Translated from the German edition (Berlin, 1934-36) by Eva Brann, with an appendix containing Vieta's Introduction to the Analytical Art translated by J. Winfree Smith. M.I.T. Press, Cambridge, Mass., 1968. xv + 360 pp. $12.50

Carl B. Boyer
Science 6 December 1968: 1112-1113.
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 The Cell Periphery, Metastasis and Other Contact Phenomena. Leonard Weiss. North-Holland, Amsterdam; Wiley, New York, 1967. 388 pp., illus. $17.50. Frontiers of Biology, vol. 7

Catherine Rappaport
Science 6 December 1968: 1113.
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 Henry E. Sigerist: Autobiographical Writings. Selected and translated by Nora Sigerst Bacon. McGill University Press, Montreal, 1966. xiv + 247 pp. $5.75

Charles W. Bodemer
Science 6 December 1968: 1113-1114.
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 An Introduction to the Theory of Superconductivity. Charles G. Kuper. Oxford University Press, New York, 1968. xxii + 301 pp., illus. $9.60. Monographs on the Physics and Chemistry of Materials

Myron Strongin
Science 6 December 1968: 1114.
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 The Neurosciences. A study program planned and edited by Gardner C. Quarton, Theodore Melnechuk, Francis O. Schmitt, and the associates and staff of the Neurosciences Research Program. Rockefeller University Press, New York, 1967. xx + 962 pp., illus. $17.50

Edwin S. Lennox
Science 6 December 1968: 1114-1115.
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 Books Received

Science 6 December 1968: 1115-1203.
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Infrasound at Long Range from Saturn V, 1967

William L. Donn, Eric Posmentier, Uri Fehr, and N. K. Balachandran
Science 6 December 1968: 1116-1120.
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Attenuation of Low-Frequency Sound in Freshwater

David G. Browning, Everett N. Jones, Robert H. Mellen, and William H. Thorp
Science 6 December 1968: 1120-1121.
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Sea Levels during the Past 35,000 Years

John D. Milliman and K. O. Emery
Science 6 December 1968: 1121-1123.
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Manganese Nodules in Lake Michigan

Ronald Rossmann and Edward Callender
Science 6 December 1968: 1123-1124.
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Weddellite in a Marine Gastropod and in Antarctic Sediments

Heinz A. Lowenstam
Science 6 December 1968: 1129-1130.
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Neuronal Coding by Cortical Cells of the Frequency of Oscillating Peripheral Stimuli

Juhani Hyvarinen, Hideo Sakata, William H. Talbot, and Vernon B. Mountcastle
Science 6 December 1968: 1130-1132.
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Erythropoiesis in the Rat: Differential Rates of DNA Synthesis and Cell Proliferation

Francis C. Monette, Joseph LoBue, Albert S. Gordon, Peter Alexander, Jr., and Po-Chuen Chan
Science 6 December 1968: 1132-1134.
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Flagellar Adenosine Triphosphatase from Sea Urchin Sperm: Properties and Relation to Motility

J. R. Claybrook and Leonard Nelson
Science 6 December 1968: 1134-1136.
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Audiogenic Seizure Prone (asp): A Gene Affecting Behavior in Linkage Group VIII of the Mouse

Robert L. Collins and John L. Fuller
Science 6 December 1968: 1137-1139.
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Mutants at the Bobbed Locus in Drosophila melanogaster: Relation to Ribosomal RNA Synthesis?

Eileen S. Gersh
Science 6 December 1968: 1139.
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Dorsal Root Potentials and Ventral Root Reflexes Evoked by Nonmyelinated Fibers

Donald N. Franz and Ainsley Iggo
Science 6 December 1968: 1140-1142.
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Radiobiological Damage: A New Class Identified in Barley Seeds Stored after Irradiation

B. V. Conger, R. A. Nilan, and C. F. Konzak
Science 6 December 1968: 1142-1143.
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Galápagos Flora: Fernandina (Narborough) Caldera before Recent Volcanic Event

Paul A. Colinvaux, Eileen K. Schofield, and Ira L. Wiggins
Science 6 December 1968: 1144-1145.
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Chemical Potential of Water from Measurements of Optic Axial Angle of Zeolites

G. Donald Eberlein and C. L. Christ
Science 6 December 1968: 1145-1146.
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2-Amino-5-(1-methyl-5-nitro-2-imidazolyl)-1,3,4-thiadiazole: A New Antimicrobial Agent

Gerald Berkelhammer and Goro Asato
Science 6 December 1968: 1146.
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Size-Detecting Mechanisms in Human Vision

Allan Pantle and Robert Sekuler
Science 6 December 1968: 1146-1148.
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Visual Cortex Neurons: Response to Stimuli during Rapid Eye Movements

Robert H. Wurtz
Science 6 December 1968: 1148-1150.
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Neolithic Economic Autonomy and Social Distance

Mark P. Leone
Science 6 December 1968: 1150-1151.
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 AAAS ANNUAL MEETING

Science 6 December 1968: 1152-1155.
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 AAAS COMMITTEE SYMPOSIA

Science 6 December 1968: 1155-1158.
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 MATHEMATICS (A)

Science 6 December 1968: 1158-1159.
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 PHYSICS (B)

Science 6 December 1968: 1159.
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 CHEMISTRY (C)

Science 6 December 1968: 1159.
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 ASTRONOMY (D)

Science 6 December 1968: 1159-1160.
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 GEOGRAPHY AND GEOLOGY

Science 6 December 1968: 1160-1161.
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 ZOOLOGICAL SCIENCES (F)

Science 6 December 1968: 1161-1165.
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 BIOLOGICAL SCIENCES (FG)

Science 6 December 1968: 1165.
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 BOTANICAL SCIENCES (G)

Science 6 December 1968: 1165-1166.
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 ANTHROPOLOGY (H)

Science 6 December 1968: 1166-1167.
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 PSYCHOLOGY (I)

Science 6 December 1968: 1167-1168.
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 SOCIAL AND ECONOMIC SCIENCES (K)

Science 6 December 1968: 1168-1169.
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 HISTORY AND PHILOSOPHY OF SCIENCE

Science 6 December 1968: 1169-1170.
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 ENGINEERING (M)

Science 6 December 1968: 1170.
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 MEDICAL SCIENCES (N)

Science 6 December 1968: 1170-1171.
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 DENTISTRY (Nd)

Science 6 December 1968: 1171.
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 AGRICULTURE (O)

Science 6 December 1968: 1171-1172.
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 INDUSTRIAL SCIENCE (P)

Science 6 December 1968: 1172.
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 EDUCATION (Q)

Science 6 December 1968: 1172-1174.
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 STATISTICS (U)

Science 6 December 1968: 1175.
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 GENERAL SCIENCES (X)

Science 6 December 1968: 1175.
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 Communication by Chemical Signals

David G. Moulton
Science 6 December 1968: 1176-1180.
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 Calendar of Events

Science 6 December 1968: 1182-1187.
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