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Previous Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931
Next Issue: New Series, Vol. 74, No. 1922, Oct. 30, 1931
Front Matter (6 pp.)
The Next Twenty Years, pp. 397-404
- Hans Zinsser
Obituary
- Thomas Alva Edison: 1847-1931, pp. 404-405
Scientific Events
- Conferences on the Calendar and on Meteorology, pp. 405-406
- Techno-Chemical Lectures of the Mellon Institute, p. 406
- The American College of Surgeons, pp. 406-407
- Gold Medals in Recognition of Work in Yellow Fever, p. 407
- Grants of the American Academy of Arts and Sciences, p. 407
- Appointments of the Carnegie Institution of Washington, p. 408
Scientific Notes and News, pp. 408-412
Discussion
- On a Possible Explanation of the Difference in Wave-Lengths of the Spectral Lines of a Given Element Produced on the Sun and on the Earth, pp. 412-413
- Fernando Sanford
- Bottom Temperatures in Deep Lakes, p. 413
- Stillman Wright
- Metabolism of Cystine and Methionine, p. 414
- Richard W. Jackson; Richard J. Block
- The Transformation of Carotene to Vitamin A in Vitro, p. 414
- Harold S. Olcott; Duane C. McCann
- Conical Snowflakes, p. 414
- Willis W. Wagener
The American Association for the Advancement of Science
- The Host Institution and Hotel Headquarters for the New Orleans Meeting, pp. 415-416
- Charles F. Roos
- Section F (Zoology) at New Orleans, pp. 416-417
- Geo. T. Hargitt
- Section E (Geology and Geography), p. 417
- Kirtley F. Mather
Scientific Apparatus and Laboratory Methods
- An Apparatus for Determining the Purity of Limestone in the Field, p. 418
- Paul Emerson
- A Simple, Quick and Inexpensive Method of Preparing Lantern Slides, p. 418
- P. E. Reid
Special Articles
- A Natural Copper Deficiency in Cattle Rations, pp. 418-419
- W. M. Neal; R. B. Becker; A. L. Shealy
- Decrease in Rate of Oxygen Consumption under the Influence of Visible Light on Sarcina lutea, pp. 419-420
- B. B. Rubenstein
Books Received, p. 420
Science News, pp. 10a+11a+12a
Previous Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931
Next Issue: New Series, Vol. 74, No. 1922, Oct. 30, 1931