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Science, New Series, Vol. 93, No. 2415, Apr. 11, 1941


Previous Issue: New Series, Vol. 93, No. 2414, Apr. 4, 1941
Next Issue: New Series, Vol. 93, No. 2416, Apr. 18, 1941


Front Matter (12 pp.)
Processes of Organic Evolution, pp. 335-339
R. Ruggles Gates

The Relation between Physical and Mental Development, pp. 339-342
Franz Boas


Obituary
Samuel Henshaw, pp. 342-343
Robert T. Jackson
Deaths and Memorials, p. 343


Scientific Events
The Commonwealth Solar Observatory, Canberra, p. 344
The Pacific Expedition of the American Museum of Natural History, p. 344
The Zoological Expedition to the Galapagos Islands of the Field Museum, pp. 344-345
Appointments, Promotions and Retirements at the Massachusetts Institute of Technology, pp. 345-346
The American Medical Association and the Anti-Trust Law, p. 346


Scientific Notes and News, pp. 346-349


Discussion
The Decrease in Vascularity of Human Hearts and Kidneys between the Third and Sixth Decades, p. 349
William Dock
Volatility of N1-Acylsulfanilamides with Steam, pp. 349-350
Walter C. Tobie; Roger D. Williams; Ellis J. Robinson
Availability of Chemicals Not Sold Commercially, p. 350
Samuel Soskin
A Prophecy Fulfilled, pp. 350-351
C. G. Abbot


Scientific Books
Human Affairs, pp. 351-352
Why Men Behave like Apes and Vice Versa
Earnest Albert Hooton
Review author[s]: Robert M. Yerkes
Biology, p. 352
Biology
Howard M. Parshley
Review author[s]: Edwin B. Matzke


Reports
The National Defense Research Committee, pp. 352-354


Special Articles
Saprophytes Antagonistic to Phytopathogenic and Other Microorganisms, pp. 354-355
P. A. Ark; Marjorie L. Hunt
Hemoglobin Regeneration in Anemic Trout Fed Liver Fractions and Fly Maggots, pp. 355-356
A. M. Phillips; Clive M. McCay
A Note on Serum Cholinesterase Variability in Male and Female Rats, pp. 356-357
J. M. R. Beveridge; C. C. Lucas


Scientific Apparatus and Laboratory Methods
The New Electron Microscope, pp. 357-358
H. E. Rhea
A Sensitive Color Reaction for 2-Methyl-1-4-Naphthoquinone and Related Compounds, p. 358
Armando Novelli


Science News, pp. 10+12-13
Back Matter (2 pp.)

Previous Issue: New Series, Vol. 93, No. 2414, Apr. 4, 1941
Next Issue: New Series, Vol. 93, No. 2416, Apr. 18, 1941



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