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Previous Issue: New Series, Vol. 80, No. 2068, Aug. 17, 1934
Next Issue: New Series, Vol. 80, No. 2070, Aug. 31, 1934
Front Matter (1 p.)
Reminiscences of Physics and Physicists, pp. 169-173
- Joseph J. Thomson
Rock Formations of Death Valley, California, pp. 173-178
- L. F. Noble
Scientific Events
- The International Congress on the Anthropological and Ethnological Sciences, pp. 178-179
- Data on the Drought, p. 179
- Field Office for the Shelterbelt Project, p. 180
- The Elm Disease Exhibit at the New York Botanical Garden, p. 180
- Award of the Chandler Medal, pp. 180-181
Scientific Notes and News, pp. 181-183
Discussion
- The Photomicrographic Reproduction of Documents, pp. 184-185
- Atherton Seidell
- The Taconic and Appalachian Orogenies in the Hudson River Region, p. 186
- James F. Pepper
- Cultivated Apple Chromosomes, p. 186
- Muriel V. Roscoe
- A Hypothetical "Sanctuary" for Ocean-Dwelling Seals, pp. 186-187
- C. Hart Merriam
Special Correspondence
Scientific Apparatus and Laboratory Methods
- Photo-Electric Technique for the Counting of Microscopical Cells, pp. 188-189
- Andrew Moldavan
- A New Source of Illumination Adapted to Photography and Low-Power Microscopy, p. 189
- Wilbur D. Courtney; Ralph Schopp
- Lantern Slides on "Frosted" Gelatine, pp. 189-190
- C. E. Power
Special Articles
- Autocatalytic Activation of Trypsinogen in the Presence of Concentrated Ammonium or Magnesium Sulfate, p. 190
- M. Kunitz; J. H. Northrop
- Crystalline Progestin, pp. 190-191
- W. M. Allen; O. Wintersteiner
- Life Span of Platypoecilus, Xiphophorus and Their Hybrids in the Laboratory, p. 191
- A. W. Bellamy
- Sexual Rhythm in the Pelecypod Mollusk Teredo, p. 192
- W. R. Coe
Books Received, p. 192
Science News, pp. 5a-7a
Back Matter (1 p.)
Previous Issue: New Series, Vol. 80, No. 2068, Aug. 17, 1934
Next Issue: New Series, Vol. 80, No. 2070, Aug. 31, 1934