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Science, New Series, Vol. 112, No. 2907, Sep. 15, 1950


Previous Issue: New Series, Vol. 112, No. 2906, Sep. 8, 1950
Next Issue: New Series, Vol. 112, No. 2908, Sep. 22, 1950


Self-Awareness and Scientific Method, pp. 289-293
George F. F. Lombard

Clifford Dobell, F.R.S.: 1886-1949, p. 294
Gordon H. Ball


Technical Papers
The Influence of ACTH and Cortisone on Certain Factors of Blood Coagulation, pp. 295-297
R. W. Smith; R. R. Margulis; M. J. Brennan; R. W. Monto
The Nucleus-Dependence of P32 Uptake by the Cell, pp. 297-299
Daniel Mazia; Henry I. Hirshfield
The Use of a Radioactive Isotope in Determining the Retention and Initial Distribution of Airborne Bacteria in the Mouse, pp. 299-300
L. J. Goldberg; W. R. Leif
The Intracellular Distribution in Rabbit Liver of Injected Antigens Labeled with I131, pp. 300-302
Charles F. Crampton; Felix Haurowitz
The Differential Induction of Lethal Mutations by Formalin in the Two Sexes of Drosophila, pp. 302-303
Irwin H. Herskowitz
Lethal Mutation Rate in Drosophila Treated with 20-Methylcholanthrene, pp. 303-306
Walter J. Burdette
Arylcycloalkylamines, p. 306
Alfred Burger; C. Robert Walter; William B. Bennet; Lennox B. Turnbull
Crystalline + Chromogen Obtained from Bombyx mori, pp. 307-308
Y. Hirata; K. Nakanishi; H. Kikkawa
Addendum: Xanthopterin Obtained from the Skins of the Yellow Mutant of Bombyx mori (Silkworm), p. 308
Built-Up Poultry-House Litter as a Growth-Promoting Supplement for Chicks on an All-Vegetable Vitamin B12-Deficient Diet, pp. 308-309
E. R. Halbrook; A. R. Winter; T. S. Sutton
Preliminary Results on the Crystal Structure of Some Ammonium Salts with Substituted Aliphatic Chains, p. 309
G. L. Clark; C. R. Hudgens
Growth Layers on the Teeth of Pinnipedia as an Indication of Age, pp. 309-311
Victor B. Scheffer


Comments and Communications
A Commentary on Structural Variation in Conifer Wood, p. 312
R. D. Preston
Maximal Consumption of Ethyl Alcohol, pp. 312-313
Ernest Beerstecher
Textbooks and Courses in General Biology, pp. 313-314
Osmond P. Breland; M. W. DE Laubenfels


Book Reviews
----------------, p. 315
Geochemistry: A Survey of the Chemistry of the Earth
Kalervo Rankama; Th. G. Sahama
Review author[s]: L. H. Adams
----------------, pp. 315-316
Physical Methods in Chemical Analysis
Walter G. Berl
Review author[s]: K. W. Meissner
----------------, p. 316
The Autobiography of Robert A. Millikan
Review author[s]: P. W. Bridgman
----------------, pp. 316-317
Heterocyclic Compounds: Three-, Four-, Five-, and Six- Membered Monocyclic Compounds Containing One O, N, and S Atom
Robert C. Elderfield
The Chemistry of Heterocyclic Compounds: The Heterocyclic Derivatives of Phosphorus, Arsenic, Antimony, Bismuth, and Silicon
Frederick George Mann
Review author[s]: C. Kenneth Banks
----------------, pp. 317-318
Natural Regions of the U.S.S.R.
L. S. Berg
Review author[s]: Joseph E. Williams


Reviewed in Brief
----------------, p. 318
A History of Biology: A General Introduction to the Study of Living Things
Charles Singer
----------------, p. 318
The Practice of Medicine
Jonathan Campbell Meakins


Scientific Book Register, p. 318
News and Notes, pp. 319-324

Previous Issue: New Series, Vol. 112, No. 2906, Sep. 8, 1950
Next Issue: New Series, Vol. 112, No. 2908, Sep. 22, 1950



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