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Science, New Series, Vol. 88, No. 2291, Nov. 25, 1938


Previous Issue: New Series, Vol. 88, No. 2290, Nov. 18, 1938
Next Issue: New Series, Vol. 88, No. 2292, Dec. 2, 1938


Front Matter (4 pp.)
Nature and the Doctor, pp. 483-489
Peyton Rous


Obituary
In Memory of Otto Hilgard Tittmann, p. 489
Recent Deaths and Memorials, pp. 489-490


Scientific Events
The Establishment in the Department of State of a Division of Cultural Relations, pp. 490-491
The Macdonald Observatory of the University of Texas, p. 491
Work of the Gray Herbarium of Harvard University, pp. 491-492
The Eastern Shade Tree Conference, p. 492
The American Ornithologists' Union, pp. 492-493
Lawrence E. Hicks
Symposia at Brown University on Intermolecular Action, p. 493


Scientific Notes and News, pp. 493-496


Discussion
Why We Seldom See a Lunar Rainbow, pp. 496-498
W. J. Humphreys
Observation of a Lunar Rainbow by Franklin, p. 498
Raymond L. Hightower
Frequency of Lunar Rainbows, p. 498
Chester K. Wentworth
Mastodon Discovered in Ohio, p. 498
Karl Ver Steeg
Fresh-Water Medusae in Tennessee, pp. 498-499
Edwin B. Powers
Hunting in South Africa, p. 499
J. W. H. Wilson
The Structure of the Insulin Molecule, p. 499
D. M. Wrinch


The American Philosophical Society
Abstracts of Papers Read at the Autumn General Meeting of the American Philosophical Society, pp. 499-505


Special Articles
The Occurrence in Nature of "Equine Encephalomyelitis" in the Ring-Necked Pheasant, pp. 505-506
Ernest Edward Tyzzer; Andrew Watson Sellards; Byron L. Bennett
The Absorption of Carbon Dioxide in Photosynthesis, pp. 506-507
Kenneth V. Thimann
Airplane Collections of Sugar-Beet Pollen, pp. 507-508
Fred C. Meier; Ernst Artschwager
Basal Diets for Vitamin B1 Determination, p. 508
O. L. Kline; Chester D. Tolle; E. M. Nelson


Science News, pp. 8a+10a-11a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 88, No. 2290, Nov. 18, 1938
Next Issue: New Series, Vol. 88, No. 2292, Dec. 2, 1938



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