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Science, New Series, Vol. 59, No. 1530, Apr. 25, 1924


Previous Issue: New Series, Vol. 59, No. 1529, Apr. 18, 1924
Next Issue: New Series, Vol. 59, No. 1531, May 2, 1924


Front Matter (4 pp.)
The History of the American Association for the Advancement of Science, pp. 365-369
Herman L. Fairchild

The Theory of Nervous Activity, pp. 369-371
P. Lasareff

Plans for the Enlargement of the Marine Biological Laboratory, pp. 371-372
Frank R. Lillie


Scientific Events
British Botanical Conference, p. 372
Fourth International Conference on Soil Science, pp. 372-373
The Committee on Grants of the American Association, p. 373
The Installation of the Johns Hopkins Chapter of Sigma Xi, pp. 373-374
G. H. Cartledge
The American Chemical Society, p. 374


Scientific Notes and News, pp. 374-377
University and Educational Notes, pp. 377-378


Discussion and Correspondence
Concerning the Variations of Atmospheric Electricity and Vertical Currents, pp. 378-379
Louis A. Bauer
Caverns in the Guadalupe Mountain Range, p. 379
Charles Lawrence Baker
The Flashing of Fireflies, p. 379
Hester L. Van Vleck
Joseph Leidy, pp. 379-380
R. C. Canby
Exhibition of the Royal Photographic Society, p. 380
A. J. Newton


Scientific Books
----------------, p. 380
A Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. IV.--Ra and Ac Families, Be, Mg, Zn, Cd, Hg
J. W. Mellor
Review author[s]: Graham Edgar


Special Articles
A Simple Method for Quantitative Studies of Ionization Phenomena in Gases, pp. 380-383
Irving Langmuir; H. A. Jones
Plurisegmental Innervation of Skeletal Muscle Fibers and Implications concerning Fatigue, pp. 383-384
McKeen Cattell; Percy G. Stiles


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 59, No. 1529, Apr. 18, 1924
Next Issue: New Series, Vol. 59, No. 1531, May 2, 1924



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