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Science, New Series, Vol. 116, No. 3012, Sep. 19, 1952


Previous Issue: New Series, Vol. 116, No. 3011, Sep. 12, 1952
Next Issue: New Series, Vol. 116, No. 3013, Sep. 26, 1952


Front Matter (1 p.)
Recruitment through Education and Experience, p. 3
Wallace R. Brode

Helium Liquefier, pp. 289-294
S. C. Collins

News and Notes, pp. 295-298


Technical Papers
Cytochrome c Oxidase Activity during the Metamorphosis of Drosophila virilis, pp. 299-300
Dietrich Bodenstein; Bertram Sacktor
Thin Films of Supersaturated Solutions for Detecting, Counting, and Identifying Very Small Crystalline Particles, pp. 300-301
Bernard Vonnegut
Algebraic Relationships between Digestion Coefficients Determined by the Conventional Method and by Indicator Methods, pp. 301-302
H. L. Lucas
Influence of pH on Phosphatase Activity of Rat Seminal Vesicles, pp. 302-303
J. C. Porter; R. M. Melampy
Differentiation of Nucleic Acids and Acid Mucopolysaccharides in Histologic Sections by Selective Extraction with Acids, pp. 303-305
William B. Atkinson
The Accuracy and Convenience of Silicone-Treated Microliter Pipettes, pp. 305-306
Edward L. Duggan; Kendric C. Smith
Propagation of a Strain of Endamoeba histolytica in Tissue-Bearing Culture, pp. 306-308
James G. Shaffer; Henry S. Sienkiewicz


Comments and Communications
Photochemical Para Rearrangement of Phenyl Ethers, p. 309
M. S. Kharasch; Guido Stampa; Walter Nudenberg
Liberal Arts Colleges and the National Academy of Sciences, p. 309
John R. Sampey


Erratum, p. 309
Howard Campbell


Book Reviews
----------------, p. 310
Factor Analysis: An Introduction and Manual for the Psychologist and Social Scientist
Raymond B. Cattell
Review author[s]: John C. Flanagan
----------------, p. 310
Hyperconjugation
John William Baker
Review author[s]: C. R. Mueller

Previous Issue: New Series, Vol. 116, No. 3011, Sep. 12, 1952
Next Issue: New Series, Vol. 116, No. 3013, Sep. 26, 1952



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