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Previous Issue: New Series, Vol. 73, No. 1901, Jun. 5, 1931
Next Issue: New Series, Vol. 73, No. 1903, Jun. 19, 1931
Front Matter (4 pp.)
Qualifications of a Research Physicist, pp. 623-627
- Albert W. Hull
The Progress of Roentgenology and Its Contribution to Medical Science, pp. 627-632
- Preston M. Hickey
Obituary
- Matthew Fontaine Maury, pp. 632-634
- S. A. Mitchell
- Memorials, p. 634
- Recent Deaths, p. 634
Scientific Events
- Reconstruction of the Royal Institution, pp. 634-635
- The International Congress for Studies Regarding Population, p. 635
- Range Research Conference at Ephraim, Utah, pp. 635-636
- The American Institute of Physics, p. 636
- Honorary Degrees Conferred by Columbia University, pp. 636-637
Scientific Notes and News, pp. 637-639
Discussion
- The Accuracy of Wireless Time Signals, p. 640
- Charles H. Smiley
- Recent Climate and Vegetation a Factor in the Mound-Building Cultures?, pp. 640-641
- Paul B. Sears
- Tyndall Beam Intensity of Turbid Colored Solutions, p. 641
- Louis Sattler; F. W. Zerban
- The Curvature of Space, pp. 641-642
- Jermain G. Porter
- Conical Snowflakes, p. 642
- A. D. Moore
- The Labrador Current and Icebergs, p. 642
- Irénée Du Pont
- The Immediate Problem for Biological Abstracts, pp. 642-643
- W. C. Curtis; F. E. Denny; A. L. Quaintance; I. W. Bailey; C. W. Greene; A. F. Woods
Reports
- Committee on Effects of Radiation upon Organisms of the National Research Council, pp. 643-645
- W. C. Curtis
Societies and Academies, pp. 645-647
Special Articles
- A Cytological Map of the X-Chromo-Some of Drosophila Melano-Gaster, pp. 647-648
- T. S. Painter
- The Structure of Protoplasm, pp. 648-649
- William Seifriz
- On a Possible Effect of Fungicides upon the Composition of Apples, pp. 649-650
- W. A. DeLong; A. D. Pickett
- Differentiation of Viruses Causing Green and Yellow Mosaics of Wheat, pp. 650-651
- H. H. McKinney
- Dissolved Phosphorus and Inorganic Nitrogen in the Water of the Mississippi River, p. 652
- A. H. Wiebe
Books Received, p. 652
Science News, pp. 10a+12a+14a
Previous Issue: New Series, Vol. 73, No. 1901, Jun. 5, 1931
Next Issue: New Series, Vol. 73, No. 1903, Jun. 19, 1931