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Science, New Series, Vol. 93, No. 2420, May 16, 1941


Previous Issue: New Series, Vol. 93, No. 2419, May 9, 1941
Next Issue: New Series, Vol. 93, No. 2421, May 23, 1941


Front Matter (13 pp.)
Annual Meeting of the American Philosophical Society, pp. 461-466
Edwin G. Conklin


Obituary
Cary Leroy Hill, pp. 466-467
Edward C. Crafts
Recent Deaths, p. 467


Scientific Events
The New York Zoological Park, pp. 467-468
The Chicago Meeting of the American Society for Testing Materials, p. 468
The One Hundred and Twentieth Anniversary of the Philadelphia College of Pharmacy and Science, pp. 468-469
The Ninth Summer Conference on Spectroscopy and its Applications, p. 469
Conference on Molecular Structure, p. 469
The Washington Meeting of the American Geophysical Union, p. 470


Scientific Notes and News, pp. 470-473


Discussion
Heavy Carbon Production by Thermal Diffusion, pp. 473-474
William W. Watson
A Giant Rodent from the Oligocene, pp. 474-475
George Gaylord Simpson
The Velocity of Light, p. 475
Arthur Bessey Smith


Scientific Books
Biological Oxidations, pp. 475-476
Mechanisms of Biological Oxidations
David E. Green
Review author[s]: Kurt G. Stern


Special Articles
Egg-White Injury as the Result of Nonabsorption or Inactivation of Biotin, pp. 477-478
Paul György; Catharine S. Rose; Robert E. Eakin; Esmond E. Snell; Roger J. Williams
The Excretion of Injected Heparin in the Urine of Mice and Dogs, pp. 478-479
Alfred Lewin Copley
The Artificial Synthesis of a 42-Chromosome Wheat, p. 479
E. J. Britten; W. P. Thompson


Scientific Apparatus and Laboratory Methods
An Antimony Electrode for the Continuous Recording of the Acidity of Human Gastric Contents, pp. 479-480
Howard W. Haggard; Leon A. Greenberg


Science News, pp. 10+12+14

Previous Issue: New Series, Vol. 93, No. 2419, May 9, 1941
Next Issue: New Series, Vol. 93, No. 2421, May 23, 1941



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