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Science, New Series, Vol. 75, No. 1944, Apr. 1, 1932


Previous Issue: New Series, Vol. 75, No. 1943, Mar. 25, 1932
Next Issue: New Series, Vol. 75, No. 1945, Apr. 8, 1932


Front Matter (4 pp.)
The Present State of the Natural Sciences, pp. 345-349
Alfred Stock


Obituary
In Memory of Robert Koch, p. 350
K. F. Herzfeld
A Monument for Ludwig Boltzmann, p. 350
Recent Deaths, pp. 350-351


Scientific Events
Investigations of Locusts, p. 351
The Field Museum of Natural History, pp. 351-352
California Academy of Sciences Expedition to Revillagigedo Archipelago, pp. 352-353
Awards of the Elizabeth Thompson Science Fund, p. 353
Geophysical Research at Harvard University, p. 353


Scientific Notes and News, pp. 353-356


Discussion
Nature's Moving Picture, p. 357
Robert Van V. Anderson
The Chemical Nature of Vitamin C, pp. 357-358
C. G. King; W. A. Waugh
Studies in Motor and Mechanical Skills, pp. 358-359
Robert H. Seashore; Ivan N. McCollom
How Big is a Cell?, p. 359
Edgar Anderson


Scientific Books
----------------, pp. 359-360
Halley's Comet in Its Appearance of 1909-1911
Nicholas T. Bobrovnikoff
Review author[s]: Chas. P. Olivier
----------------, pp. 360-361
The Insect Menace
L. O. Howard
Review author[s]: E. P. Felt


American Association for the Advancement of Science
The Host Institution and Hotel Accommodations for the Syracuse Meeting, pp. 361-362
Charles F. Roos


Scientific Apparatus and Laboratory Methods
The Estimation of the Hydrogen-Ion Concentration of the Tissues in Living Animals, pp. 362-364
Carl Voegtlin; H. Kahler
A Culture Medium for Paramecium, p. 364
Lauren E. Rosenberg


Special Articles
Size of Infection as an Influence on the Persistence of Adult Trichinae in Rats, pp. 364-365
O. R. McCoy
Succession of Forests as Indicated by Fossil Pollen from a Northern Michigan Bog, p. 366
J. E. Potzger


Books Received, p. 366
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 75, No. 1943, Mar. 25, 1932
Next Issue: New Series, Vol. 75, No. 1945, Apr. 8, 1932



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