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Science, New Series, Vol. 90, No. 2337, Oct. 13, 1939


Previous Issue: New Series, Vol. 90, No. 2336, Oct. 6, 1939
Next Issue: New Series, Vol. 90, No. 2338, Oct. 20, 1939


Front Matter (4 pp.)
Addresses at the Opening Assembly of the International Union of Geodesy and Geophysics, pp. 339-345


Obituary
Warren Plimpton Lombard, pp. 345-346
Robert Gesell
Recent Deaths, pp. 346-347


Scientific Events
The Arnold Arboretum Expedition to Northwestern Canada, p. 347
Hugh M. Raup
The Bishop Ornithological Collection, p. 347
The Lalor Foundation Fellowship Awards, pp. 347-348
Symposium on Cryogenic Research of the American Chemical Society, pp. 348-349
F. G. Keyes
Scientific Lectures of the College of Physicians of Philadelphia, p. 349
Medical Education at the University of Chicago, p. 349
Grants in Aid of Research of the American Association for the Advancement of Science, pp. 349-350
F. R. Moulton


Scientific Notes and News, pp. 350-352


Discussion
The Origin of the Human Races, pp. 352-353
A. B. Droogleever Fortuyn
The Floating Population of the Air, pp. 353-354
T. D. A. Cockerell
A Request to Mathematical Geneticists, p. 354
Harrison R. Hunt
The Range of Hearing of Canaries, p. 354
A. R. Brand; P. P. Kellogg


Scientific Books
Plane Topology, pp. 354-355
Elements of the Topology of Plane Sets of Points
M. H. A. Newman
The Physiology and Pharmacology of the Pituitary Body
H. B. Van Dyke
Review author[s]: R. L. Wilder; Philip E. Smith


Special Articles
The Sensitizing Properties of the Nucleic Acids and Their Derivatives, p. 356
Walter L. Winkenwerder; Mary V. Buell; John Eager Howard
A Possible Relation between Manganese, Sunlight and Winter Hatchability of Hen's Eggs, pp. 356-357
J. B. Christiansen; J. G. Halpin; E. B. Hart
The Electrophoretic Analysis of Antipneumococcus Horse Sera, pp. 357-358
D. H. Moore; J. Van Der Scheer; R. W. G. Wyckoff
The Physiological Changes Produced in Yeast by Ultra-Violet Light and by Heat, p. 358
Thomas F. Anderson; B. M. Duggar


Science News, pp. 6a+8a+9a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 90, No. 2336, Oct. 6, 1939
Next Issue: New Series, Vol. 90, No. 2338, Oct. 20, 1939



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