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Science, New Series, Vol. 78, No. 2012, Jul. 21, 1933


Previous Issue: New Series, Vol. 78, No. 2011, Jul. 14, 1933
Next Issue: New Series, Vol. 78, No. 2013, Jul. 28, 1933


Front Matter (2 pp.)
Chemical Mediators of Autonomic Nerve Impulses, pp. 43-48
Walter B. Cannon

High Voltage. II, pp. 48-52
Karl T. Compton


Scientific Events
The Emergency Conservation Program, p. 52
The Emergency Committee in Aid of Displaced German Scholars, pp. 52-53
Dismissals from the Bureau of Mines, p. 53
Public Works Funds Allotted to Scientific Bureaus, pp. 53-54
The International Geological Congress, p. 54
Obituary, pp. 54-55


Scientific Notes and News, pp. 55-58


Discussion
Observation of a New Mexico Meteor from the Air, p. 58
R. W. Ellis
An Explanation of the Cause of Spiral Grain in Trees, pp. 58-59
Edwin J. Kohl
The Poisoning of Fish, pp. 59-60
Walter W. Aitken
Punishment and Reward in Learning, p. 60
J. M. Stephens


Quotations
Science and Public Works, p. 61


Scientific Apparatus and Laboratory Methods
A Photographic Technique for the Study of Extensive Data on Small Populations, pp. 61-62
Chester W. Darrow
An Improved Capillary Mercury Vapor Lamp, p. 62
Alexander Hollaender; J. F. Stauffer


Special Articles
Investigations in Puerto Rico on Manson's Blood-Fluke Infection (Schistosomiasis mansoni), pp. 62-63
Ernest Carroll Faust
Transmission of Infectious Equine Encephalomyelitis in Mammals and Birds, pp. 63-64
L. T. Giltner; M. S. Shahan
Preliminary Note on the Structure of Ascorbic Acid (Vitamin C), p. 64
P. A. Levene; A. L. Raymond


Books Received, p. 64
Science News, pp. 6a+7a+8a

Previous Issue: New Series, Vol. 78, No. 2011, Jul. 14, 1933
Next Issue: New Series, Vol. 78, No. 2013, Jul. 28, 1933



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