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Previous Issue: New Series, Vol. 51, No. 1322, Apr. 30, 1920
Next Issue: New Series, Vol. 51, No. 1324, May 14, 1920
Front Matter (1 p.)
Multiplex Telephony and Telegraphy over Open-Circuit Bare Wires Laid in the Earth Or Sea, pp. 445-449
- George O. Squier
Résumé of Research in the Psychology of Aviation during the Year 1919, pp. 449-452
- Harry M. Johnson
General Biology and the Junior College, pp. 452-455
- Leonas L. Burlingame; Ernest G. Martin
Francis C. Phillips, pp. 455-456
- Alexander Silverman
Scientific Events
- Bird Banding Work Being Taken over by the Biological Survey, pp. 456-457
- E. W. Nelson
- The Pacific Coast Division of the American Association for the Advancement of Science, p. 457
- The Resignation of the Director of the Bureau of Mines, pp. 457-458
- Resignation of Professor E. F. Nichols from the Yale University Faculty, p. 458
- The Allegheny Observatory, pp. 458-459
Scientific Notes and News, pp. 459-462
University and Educational News, p. 462
Discussion and Correspondence
- Singing Sands, pp. 462-464
- Albert R. Ledoux
- Modern Interpretations of Differentials, pp. 464-465
- Arthur S. Hathaway
- Carbon Dioxide and Increased Crop Production, p. 465
- Benjamin Harrow
- Structural Blue in Snow, pp. 465-466
- Jerome Alexander
Scientific Books
- ----------------, pp. 466-467
- How to Make and Use Graphic Charts
- Allan C. Haskell
- Review author[s]: R. Von Huhn
Special Articles
- The Heredity of Susceptibility to a Transplantable Sarcoma (J. W. B.) of the Japanese Waltzing Mouse, pp. 467-468
- C. C. Little
The American Association of Petroleum Geologists, pp. 468-470
The American Association for the Advancement of Science
- Minutes of the Executive Committee of the Council, pp. 470-472
- Burton E. Livingston
Back Matter (1 p.)
Previous Issue: New Series, Vol. 51, No. 1322, Apr. 30, 1920
Next Issue: New Series, Vol. 51, No. 1324, May 14, 1920