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Science, New Series, Vol. 45, No. 1156, Feb. 23, 1917


Previous Issue: New Series, Vol. 45, No. 1155, Feb. 16, 1917
Next Issue: New Series, Vol. 45, No. 1157, Mar. 2, 1917


Front Matter (1 p.)
Biology and Preparedness, pp. 173-178
Stewart Paton

The Ecological Significance of Soil Aeration, pp. 178-180
W. A. Cannon; E. E. Free


Scientific Events
The Work of the American Museum of Natural History, p. 181
Higher Education in Washington, pp. 181-182
Grants for Scientific Work from the Loutreuil Fund, pp. 182-183


Scientific Notes and News, pp. 183-186
University and Educational News, pp. 186-187


Discussion and Correspondence
The Limit of the Spectrum in the Ultraviolet, p. 187
Theodore Lyman
The Foundations of Dynamics and Dadourian's Analytical Mechanics, pp. 187-189
H. M. Dadourian
The Synchronic Behavior of Phalangidæ, pp. 189-190
W. M. Wheeler
More Complete Titles, p. 190
Henry H. Donaldson


Scientific Books
----------------, pp. 190-191
Milk and Its Hygienic Relations
Janet E. Lane-Claypon
Review author[s]: C. M. Hilliard
----------------, p. 191
Fungoid and Insect Pests
F. R. Petherbridge
Review author[s]: H. L. Bolley


Special Articles
Is Species-Specificity a Mendelian Character?, pp. 191-193
Jacques Loeb


The American Physical Society, pp. 193-195
A. D. Cole

Societies and Academies, pp. 195-196

Previous Issue: New Series, Vol. 45, No. 1155, Feb. 16, 1917
Next Issue: New Series, Vol. 45, No. 1157, Mar. 2, 1917



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