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Science, New Series, Vol. 121, No. 3148, Apr. 29, 1955


Previous Issue: New Series, Vol. 121, No. 3147, Apr. 22, 1955
Next Issue: New Series, Vol. 121, No. 3149, May 6, 1955


Science and Policy, pp. 5A
Paul B. Sears

Front Matter (1 p.)
Government and the Freedom of Science, pp. 615-619
John T. Edsall

The National Academy of Sciences: Abstracts of Papers Presented at the Annual Meeting, 25-27 April 1955, pp. 619-627
News and Notes, pp. 627-635


Book Reviews
----------------, p. 636
Optics
Arnold Sommerfeld
Review author[s]: A. G. Shenstone
----------------, p. 636
The Psychology of Invention in the Mathematical Field
Jacques Hadamard
Review author[s]: Sydney H. Gould
----------------, pp. 636-637
The Theory of the Photographic Process
C. E. Kenneth Mees
Review author[s]: Lloyd E. Varden
----------------, p. 637
Principles of Geomorphology
William D. Thornbury
Review author[s]: Charles R. Warren
----------------, pp. 637-638
The Alkaloids: Chemistry and Physiology
R. H. F. Manske; H. L. Holmes
Review author[s]: Lyndon F. Small
----------------, p. 638
Organic Analysis
John Mitchell; I. M. Kolthoff; E. S. Proskauer; A. Weissberger
Review author[s]: Lyman Chalkley


Books Reviewed in The Scientific Monthly, p. 638
New Books, p. 639
Miscellaneous Publications, p. 640


Technical Papers
Anomalous Structure in the Hypocotyl of Soybean Following Treatment with 2,4-Dichlorophenoxyacetic Acid, p. 641
C. N. Sun
Genetic and Nongenetic Effects of Radiations in Neurospora, pp. 641-642
V. W. Woodward; C. M. Clark
Liquid Sulfur Dioxide as a Solvent for Proteins and the Infrared Spectrum of Proteins in Solution, pp. 642-644
Joseph J. Katz
Auxin Gradient Theory of Abscission Regulation, pp. 644-645
F. T. Addicott; R. S. Lynch; H. R. Carns


Communications
Educators Sampled from an Undefined Population, pp. 645-646
Julian C. Stanley; Peggy Thomasson
Change in pK double prime a of Representative Compounds with Solvent Composition, pp. 646-647
J. M. Vandenbelt; Carola H. Spurlock; Marian Giffels; Marjorie W. Eash
More on Contemporary Science and the Poets, pp. 647-648
H. David Hammond; J. Z. Fullmer

Previous Issue: New Series, Vol. 121, No. 3147, Apr. 22, 1955
Next Issue: New Series, Vol. 121, No. 3149, May 6, 1955



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