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Previous Issue: New Series, Vol. 69, No. 1789, Apr. 12, 1929
Next Issue: New Series, Vol. 69, No. 1791, Apr. 26, 1929
Front Matter (4 pp.)
The Fiftieth Anniversary of the U. S. Geological Survey
- Science in the Government, pp. 409-410
- Ray Lyman Wilbur
- Thomas Jefferson, the Pioneer of American Paleontology, pp. 410-413
- Henry Fairfield Osborn
The Potentialities of Entomology, pp. 413-418
- Royal N. Chapman
Scientific Events
- The New Harvard Chemical Laboratories, pp. 418-419
- The Southwest Arboretum of the Boyce Thompson Institute for Plant Research, p. 419
- The Fifth International Botanical Congress, pp. 419-420
- Symposia on Theoretical Physics and Chemical Kinetics, p. 420
Scientific Notes and News, pp. 420-424
University and Educational Notes, pp. 424-425
Discussion and Correspondence
- Is Life Quantity?, pp. 425-427
- William E. Ritter
- Hermaphroditism in Arbacia, p. 427
- L. V. Heilbrunn
- Microphotograph Or Photomicrograph?, pp. 427-428
- G. H. Godfrey
- When is Normal Normal?, p. 428
- O. L. Tinklepaugh
Scientific Books
- ----------------, pp. 428-431
- Scientific Papers of William Bateson
- R. C. Punnett
- Review author[s]: W. E. Castle
The American Geophysical Union, pp. 431-432
- Jno. A. Fleming
Scientific Apparatus and Laboratory Methods
- The In Vivo Cultivation of Intestinal Protozoa in Parasite-Free Chicks, pp. 432-434
- Robert Hegner
Special Articles
- Is the Twelve-Hour Variation in Atmospheric Pressure an Electric Phenomenon?, pp. 434-436
- Fernando Sanford
Science News, pp. x+xii+xiv
Previous Issue: New Series, Vol. 69, No. 1789, Apr. 12, 1929
Next Issue: New Series, Vol. 69, No. 1791, Apr. 26, 1929