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Science, New Series, Vol. 75, No. 1951, May 20, 1932


Previous Issue: New Series, Vol. 75, No. 1950, May 13, 1932
Next Issue: New Series, Vol. 75, No. 1952, May 27, 1932


Front Matter (2 pp.)
The Pioneering Process, pp. 521-528
Isaiah Bowman


Scientific Events
The Zoological Society of London, p. 528
Research Committees of the Section of Hydrology of the American Geophysical Union, pp. 528-529
The National Parks Association, p. 529
The American Physical Society, pp. 529-530
The Sixth International Congress of Genetics, p. 530
Appropriations for Grants-In-Aid by the National Research Council, pp. 530-531
George K. Burgess
The Medal Meeting of the Franklin Institute, p. 531


Scientific Notes and News, pp. 531-534


Discussion
Relations of Bioclimatics to the Other Sciences, pp. 535-536
Andrew D. Hopkins
Periglacial Phenomena in the Puget Sound Region, p. 536
Henry M. Eakin
Meter in Composition, pp. 536-537
George W. Lay
Academic Freedom in Spain, p. 537
P. H. Yancey
Durable Films, p. 537
C. Ward Crampton


Special Articles
The Deflection of Light in the Sun's Gravitational Field, pp. 538-540
Robert J. Trumpler
Normal Tissues as a Possible Source of Inhibitor for Tumors, pp. 540-541
James B. Murphy; Ernest Sturm
Meta-Amino Para-Hydroxy Phenyl Arsine Oxide as an Anti-Syphilitic Agent, pp. 541-542
Arthur L. Tatum; Garrett A. Cooper
Airplane Oiling to Control Mosquitoes, p. 542
Joseph M. Ginsburg


The National Academy of Sciences
Papers Presented at the Washington Meeting, pp. 543-546


Books Received, p. 546
Science News, pp. 8a-10a

Previous Issue: New Series, Vol. 75, No. 1950, May 13, 1932
Next Issue: New Series, Vol. 75, No. 1952, May 27, 1932



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