Articles

 Technology Assessment and Human Possibilities

Richard A. Carpenter
Science 7 November 1969: 653.
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 Pattern Perception

P. C. Vitz
Science 7 November 1969: 654-655.
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 Youth: Ego Ideals and the Impact of Culture

Herman M. Serota
Science 7 November 1969: 656.
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 Courses

Science 7 November 1969: 657.
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 Cyclamate Ban

Stanley L. Inhorn and Lorraine F. Meisner
Science 7 November 1969: 685-686.
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 Reactors and the Public Good

Andrew P. Hull
Science 7 November 1969: 686-688.
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 Letters to the Editor

A. David Rossin
Science 7 November 1969: 688.
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 Moon, Mars, and Money

Russell G. Lynch
Science 7 November 1969: 688.
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 Amchitka: Waves of Opinion

Gene Davidson
Science 7 November 1969: 688-690.
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 Dyons Versus Quarks

Julian Schwinger
Science 7 November 1969: 690-691.
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 Letters to the Editor

Luther J. Carter
Science 7 November 1969: 690.
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 Electrodes

C. Ronald Dayton
Science 7 November 1969: 691.
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 Chemicals and Cancer

Philip H. Abelson
Science 7 November 1969: 693.
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 Some Mathematical Models in Science

Mark Kac
Science 7 November 1969: 695-699.
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 Aquatic Weeds

L. G. Holm, L. W. Weldon, and R. D. Blackburn
Science 7 November 1969: 699-709.
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 The Earliest Americans

C. Vance Haynes, Jr.
Science 7 November 1969: 709-715.
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 Nobel Laureates in Economics, Chemistry, and Physics

Lawrence R. Klein, Ernest L. Eliel, and M. L. Goldberger
Science 7 November 1969: 715-722.
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 The Population Crisis: Rising Concern at Home

Luther J. Carter
Science 7 November 1969: 722-726.
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 Technological Abstinence Advocated

Science 7 November 1969: 723.
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 Yesterday Cyclamates, Today 2,4,5-T, Tomorrow DDT?

Joel R. Kramer
Science 7 November 1969: 724.
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 NEWS IN BRIEF

Science 7 November 1969: 725.
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 Medical Schools: At the Center, the Problem Is Unreimbursed Costs

John Walsh
Science 7 November 1969: 726-728.
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 Basic Research: Britain Tries to Measure Payoff

D. S. G.
Science 7 November 1969: 727.
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 RECENT DEATHS

Science 7 November 1969: 728.
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 Induction and Intuition in Scientific Thought. Jayne Lectures for 1968. Peter Brian Medawar. American Philosophical Society. Philadelphia, 1969. xii + 64 pp. $2. Memoirs of the American Philosophical Society, vol. 75

John Ziman
Science 7 November 1969: 729-730.
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 The Relations between the Sciences. Based on the Tarner Lectures, Trinity College, Cambridge, 1959. C. F. A. Pantin. A. M. Pantin and W. H. Thorpe, Eds. Cambridge University Press, New York, 1968. xii + 208 pp., illus. $7.50

John Ziman
Science 7 November 1969: 729-730.
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 A Coastal Pond. Studied by Oceanographic Methods. K. O. Emery. Elsevier, New York, 1969. xiv + 82 pp., illus. $8.50

J. Gordon Ogden, III
Science 7 November 1969: 730-731.
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 Toxic Constituents of Plant Foodstuffs. Irvin E. Liener, Ed. Academic Press, New York, 1969. xvi + 504 pp., illus. $20. Food Science and Technology, vol. 6

Anthony M. Guarino
Science 7 November 1969: 731-732.
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 Food Pharmacology. N. Sapeika. Thomas, Springfield, Ill., 1969. xiv + 186 pp., illus. $9.50. American Lecture Series, No. 732

Anthony M. Guarino
Science 7 November 1969: 731-732.
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 Microbial Growth. Nineteenth Symposium of the Society for General Microbiology, London, 1969. Pauline M. Meadow and S. J. Pirt, Eds. Published for the Society of General Microbiology by Cambridge University Press, New York, 1969. xii + 452 pp. + plates. $16.50

Donald P. Nierlich
Science 7 November 1969: 732.
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 Books Received

Science 7 November 1969: 732-802.
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Apollo Lunar Module Engine Exhaust Products

B. R. Simoneit, A. L. Burlingame, D. A. Flory, and I. D. Smith
Science 7 November 1969: 733-738.
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Superpressure Balloon Flights in the Tropical Stratosphere

Vincent E. Lally, Aubrey P. Schumann, and Richard J. Reed
Science 7 November 1969: 738-739.
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Carbonate Sediments: Oriented Lithified Samples from the North Atlantic

Grant A. Bartlett and Robert G. Greggs
Science 7 November 1969: 740-741.
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Zircon Ages of Felsic Volcanic Rocks in the Upper Precambrian of the Blue Ridge, Appalachian Mountains

D. W. Rankin, T. W. Stern, J. C. Reed, Jr, and M. F. Newell
Science 7 November 1969: 741-744.
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Sedimentary Phosphate Method for Estimating Paleosalinities: A Paleontological Assumption

Albert L. Guber
Science 7 November 1969: 744-746.
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Serum Cholesterol Reduction by Chromium in Hypercholesterolemic Rats

Herbert W. Staub, George Reussner, and Reinhardt Thiessen, Jr.
Science 7 November 1969: 746-747.
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Cell Sorting: Automated Separation of Mammalian Cells as a Function of Intracellular Fluorescence

H. R. Hulett, W. A. Bonner, Janet Barrett, and Leonard A. Herzenberg
Science 7 November 1969: 747-749.
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Chloroplast Replication and Growth in Tobacco

Rosalinda Boasson and W. M. Laetsch
Science 7 November 1969: 749-751.
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Calibrated Membranes with Coated Pore Walls

W. J. Petzny and J. A. Quinn
Science 7 November 1969: 751-753.
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Thymus and Reproduction: Sex-Linked Dysgenesia of the Gonad after Neonatal Thymectomy in Mice

Yasuaki Nishizuka and Teruyo Sakakura
Science 7 November 1969: 753-755.
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Berberine: Complex with DNA

Anne K. Krey and Fred E. Hahn
Science 7 November 1969: 755-757.
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Host Finding by Odor in the Myrmecophilic Beetle Atemeles pubicollis Bris. (Staphylinidae)

Bert Hölldobler
Science 7 November 1969: 757-758.
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Acid Polysaccharides from Invertebrate Connective Tissue: Phylogenetic Aspects

Richard L. Katzman and Roger W. Jeanloz
Science 7 November 1969: 758-759.
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Thiamine Release from Nerve Membranes by Tetrodotoxin

Y. Itokawa and J. R. Cooper
Science 7 November 1969: 759-760.
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Parasexual Cycle in Cultivated Human Somatic Cells

G. M. Martin and C. A. Sprague
Science 7 November 1969: 761-763.
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Fungal Endogenous Rhythms Expressed by Spiral Figures

J. A. Bourret, R. G. Lincoln, and B. H. Carpenter
Science 7 November 1969: 763-764.
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Photochemical Reactions and the Chemical Evolution of Purines and Nicotinamide Derivatives

J. P. Ferris, J. E. Kuder, and A. W. Catalano
Science 7 November 1969: 765-766.
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Phenylalanine and Tyrosine Synthesis under Primitive Earth Conditions

Nadav Friedmann and Stanley L. Miller
Science 7 November 1969: 766-767.
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Induction of Helical Arrays of Ribosomes by Vinblastine Sulfate in Escherichia coli

Elizabeth W. Kingsbury and Herbert Voelz
Science 7 November 1969: 768-769.
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Evoked Potentials: Modifications by Classical Conditioning

H. Begleiter and A. Platz
Science 7 November 1969: 769-771.
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 Positive Instances of Reinstatement

Donald J. Lewis
Science 7 November 1969: 772.
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 Canterbury Cathedral: An Alternate Explanation of Its Plan

Frank E. Barmore and Lyle B. Borst
Science 7 November 1969: 772-774.
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 Space Astronomy

Michael D. Papagiannis
Science 7 November 1969: 775-776.
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 Science Policy and State Government

Thomas G. Fox
Science 7 November 1969: 777.
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 The Nature and Dignity of Man

Preston N. Williams
Science 7 November 1969: 778-779.
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 Materials

Dixon Johnson
Science 7 November 1969: 780-782.
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 Forthcoming Events

Science 7 November 1969: 783-788.
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