Articles

 Defoliation Effects on Forest Ecology

Michael Newton
Science 12 July 1968: 109.
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 Letters to the Editor

L. T. Burcham
Science 12 July 1968: 109.
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 Education in the Shadow of Contempt

Harry S. Broudy and M. C. Wittrock
Science 12 July 1968: 110-111.
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 Food Irradiation Study

John W. Crenshaw, Jr.
Science 12 July 1968: 111.
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 Nuclear Power—Rosy Optimism and Harsh Reality

Philip H. Abelson
Science 12 July 1968: 113.
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 Bonding and Structures of Transition Metals

Leo Brewer
Science 12 July 1968: 115-122.
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 The Iron Age North of the Alps

Ralph M. Rowlett
Science 12 July 1968: 123-134.
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 How Technology Will Shape the Future

Emmanuel G. Mesthene
Science 12 July 1968: 135-142.
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 Budget Cuts: Government Agencies Preparing To Reduce Spending

Daniel S. Greenberg
Science 12 July 1968: 143-145.
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 Scientists in Politics: Humphrey Trails McCarthy in Support

D. S. G.
Science 12 July 1968: 145-146.
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 Irradiated Food: FDA Blocks AEC, Army Requests for Approval

Andrew Jamison
Science 12 July 1968: 146-148.
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 APPOINTMENTS

Science 12 July 1968: 149.
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Continental Shelf: Scramble for Federal Oil-Lease Revenues

Luther J. Carter
Science 12 July 1968: 149.
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 Treasures of Prehistoric Art. André Leroi-Gourhan. Translated from the French by Norbert Guterman. Abrams, New York, 1967. 543 pp., illus. $40

Morton H. Levine
Science 12 July 1968: 150-152.
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 Palaeolithic Cave Art. Peter J. Ucko and Andrée Rosenfeld. McGraw-Hill, New York, 1967. 256 pp., illus. Cloth, $4.95; paper, $2.95. World University Library

Morton H. Levine
Science 12 July 1968: 150-152.
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 Prehistoric Art. Paleolithic Painting and Sculpture. P. M. Grand. New York Graphic Society, Greenwich, Conn., 1967. 103 pp., illus. $12.50. The Pallas Library of Art, vol. 3

Morton H. Levine
Science 12 July 1968: 150-152.
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 The Radiobiology of Cultured Mammalian CellS. Mortimer M. Elkind and Gordon F. Whitmore. Prepared under the direction of the American Institute of Biological Sciences for the U.S. Atomic Energy Commission. Gordon and Breach, New York, 1967. xvi + 615 pp., illus. $13.50; to libraries, $32

W. K. Sinclair
Science 12 July 1968: 152.
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 Plant Nematology. W. R. Jenkins and D. P. Taylor. Reinhold, New York, 1967. xviii + 270 pp., illus. $12.50

V. H. Dropkin
Science 12 July 1968: 152-153.
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 Polyhedral Boranes. Earl L. Muetterties and Walter H. Knoth. Dekker, New York, 1968. viii + 197 pp., illus. $13.50

M. F. Hawthorne
Science 12 July 1968: 153.
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 The Many-Body Problem in Quantum Mechanics. N. H. March, W. H. Young, and S. Sampanthar. Cambridge University Press, New York, 1967. x + 459 pp., illus. $14.50

Michael P. Greene
Science 12 July 1968: 153-154.
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 Theory of Magnetism in Transition Metals. Proceedings of the International School of Physics "Enrico Fermi," Course 37, Varenna, Italy, June 1966. W. Marshall, Ed. Academic Press, New York, 1967. xiv + 454 pp., illus. $18.50

H. Ehrenreich
Science 12 July 1968: 154.
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 Physiology of Hemostasis and Thrombods. A conference held in conjunc tion with the 14th Symposium on Blood, Detroit, Jan. 1966. Shrley A. Johnson and Walter H. Seegers, Eds. Thomas, Springfield, Ill., 1967. xiv + 338 pp., illus. $13.75. American Lecture Series Publication No. 675

C. R. Rizza
Science 12 July 1968: 154-155.
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 Mammalian Hibernation III. Proceedings of the 3rd international symposium, Toronto, Sept. 1965. Kenneth C. Fisher, Albert R. Dawe, Charles P. Lyman, Eduard Schönbaum, and Frank E. South, Jr., Eds. Elsevier, New York, 1967. xiv + 535 pp., illus. $22.50

William R. Dawson
Science 12 July 1968: 155.
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 Fungicides: An Advanced Treatise. Vol. 1, Agricultural and Industrial Applications, Environmental Interactions. Dewayne C. Torgeson, Ed. Academic Press, New York, 1967. xviii + 697 pp., illus. $29

James G. Horsfall
Science 12 July 1968: 155-156.
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 Electrophoresis. Theory, Methods, and Applications. Vol. 2. Milan Bier, Ed. Academic Press, New York, 1967. xviii + 553 pp., illus. $21

George F. Vande Woude
Science 12 July 1968: 156.
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 Books Received

Science 12 July 1968: 156.
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Middle Pennsylvanian Plant Fossils: Problematic Occurrence in the Bronx

E-an Zen and Sergius H. Mamay
Science 12 July 1968: 157-158.
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Precambrian Marine Environment and the Development of Life

Peter K. Weyl
Science 12 July 1968: 158-160.
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Gels Composed of Sodium-Aluminium Silicate, Lake Magadi, Kenya

Hans P. Eugster and Blair F. Jones
Science 12 July 1968: 160-163.
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Cell Division in Erwinia: Inhibition of Nuclear Body Division in Filaments Grown in Penicillin or Mitomycin C

E. A. Grula, Gerald L. Smith, and Mary M. Grula
Science 12 July 1968: 164.
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Porcine Proinsulin: Characterization and Amino Acid Sequence

Ronald E. Chance, Robert M. Ellis, and William W. Bromer
Science 12 July 1968: 165-167.
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Abnormal Water Balance in a Mutant Strain of Chickens

William A. Dunson and Edward G. Buss
Science 12 July 1968: 167-169.
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Actomyosin-Like Protein Isolated from Mammalian Brain

S. Puszkin, S. Berl, Elena Puszkin, and D. D. Clarke
Science 12 July 1968: 170-171.
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Cytomembrane Differentiation in the Endoplasmic Reticulum-Golgi Apparatus-Vesicle Complex

S. N. Grove, C. E. Bracker, and D. J. Morré
Science 12 July 1968: 171-173.
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Infectious Mononucleosis: Complement-Fixing Antibodies to Herpes-Like Virus Associated with Burkitt Lymphoma

Paul Gerber, Dorothy Hamre, Richard A. Moy, and Edith N. Rosenblum
Science 12 July 1968: 173-175.
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Silicification of Betula Woody Tissue in vitro

Ryan W. Drum
Science 12 July 1968: 175-176.
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Lymphocytes: Circulation Altered by Trypsin

Judith Woodruff and Bertram M. Gesner
Science 12 July 1968: 176-178.
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Potassium Hydrogen Malonate: Remarkable Crystal and Molecular Structure

R. Parthasarathy
Science 12 July 1968: 179-180.
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Aspirin: Action on Receptor in the Tooth

Donald Scott, Jr.
Science 12 July 1968: 180-181.
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Cellular Localization of Leucine-Binding Protein from Escherichia coli

Paul K. Nakane, George E. Nichoalds, and Dale L. Oxender
Science 12 July 1968: 182.
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Multiple Chromosome Triplication in Liatris

Donald A. Levin
Science 12 July 1968: 183-184.
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Lateralized Suppression of Dichotically Presented Digits after Commissural Section in Man

Brenda Milner, L. Taylor, and R. W. Sperry
Science 12 July 1968: 184-185.
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Human Brain: Left-Right Asymmetries in Temporal Speech Region

Norman Geschwind and Walter Levitsky
Science 12 July 1968: 186-187.
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Eye Tracking of Observer-Generated Target Movements

Martin J. Steinbach and Richard Held
Science 12 July 1968: 187-188.
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 Amoebic Meningoencephalitis

John I. Payne
Science 12 July 1968: 189.
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 Endovitamins and Orthomolecular Environment

Luis M. Rinaldini
Science 12 July 1968: 189.
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 Carcinogenesis and Carcinogen Testing

F. Homburger
Science 12 July 1968: 190-192.
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 Calendar of Events

Science 12 July 1968: 192.
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