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Previous Issue: New Series, Vol. 71, No. 1838, Mar. 21, 1930
Next Issue: New Series, Vol. 71, No. 1840, Apr. 4, 1930
Front Matter (4 pp.)
Honor Societies, pp. 325-331
- E. P. Lyon
Obituary
- Richard Mills Pearce, Junior, pp. 331-332
- Simon Flexner
Scientific Events
- An African Mammal Hall for the Museum of the California Academy of Sciences, p. 332
- The Second Bermuda Oceanographic Expedition, p. 333
- The Medal Awards of the American Geographical Society, pp. 333-334
- Celebration of Fifty Years of Engineering Progress by the American Society of Mechanical Engineers, pp. 334-335
Scientific Notes and News, pp. 335-340
Discussion
- Enveloping Membranes of Echinoderm Ova, p. 340
- Robert Chambers
- The Electron and Radiation, pp. 340-341
- R. D. Kleeman
- Note on Haemoglobin, p. 341
- A. Bruce Macallum; R. C. Bradley
- A Fossil Mammal with Unborn Twins, pp. 341-342
- Cleophas C. O'Harra
- Babylonian Mathematics, p. 342
- R. C. Archibald
- Useful Great Toes, p. 342
- W. W. Keen
Scientific Books
- ----------------, pp. 342-343
- Revision of the American Chipmunks
- Arthur H. Howell
- Review author[s]: T. D. A. Cockerell
Scientific Apparatus and Laboratory Methods
- A Simple Spot-Plate Test for Nitrate Nitrogen in Soil and Other Extracts, pp. 343-344
- M. Francis Morgan
- The Capnometer, an Instrument for the Measurement of Air Pollution, pp. 344-345
- H. B. Meller
Special Articles
- A Theory of the Ring Method for the Determination of Surface Tension, pp. 345-346
- B. B. Freud; H. Z. Freud
- Prolonged Effect on Digitalis Purpurea of Exposure under Ultra-Violet-Transmitting Glass, p. 346
- Adelia McCrea
Books Received, p. 346
Science News, pp. x+xii+xiv
Previous Issue: New Series, Vol. 71, No. 1838, Mar. 21, 1930
Next Issue: New Series, Vol. 71, No. 1840, Apr. 4, 1930