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Previous Issue: New Series, Vol. 72, No. 1855, Jul. 18, 1930
Next Issue: New Series, Vol. 72, No. 1857, Aug. 1, 1930
Front Matter (4 pp.)
The Origin, Growth and Significance of the Mental Hygiene Movement, pp. 77-81
- William A. White
Periodicals for Electrical Engineers, pp. 81-84
- J. K. McNeely; C. D. Crosno
Scientific Events
- The Rayleigh Collection at the South Kensington Museum, p. 84
- The New Scientific Laboratories at the University of Chicago, pp. 84-85
- Summer Meeting of the Botanical Society of America, p. 85
- Rodney H. True
- First Awards of the Pack Forest Education Board, pp. 85-86
- Appointments in the U. S. Geological Survey, p. 86
Scientific Notes and News, pp. 86-89
Discussion
- The Magnetic Poles of the Earth and the Birth of the Moon, p. 89
- Oliver Justin Lee
- Effect of Water on Triboelectric Luminescence with Mercury in Glass, pp. 89-90
- Thomas S. Logan; Roger K. Taylor
- Gas Discharge Wave-Length List in the Extreme Ultra-Violet, p. 90
- Janet M. MacInnes; Joseph C. Boyce
- More about a Uniform Bibliographic System, pp. 90-91
- J. L. St. John
- Attack by a Screech-Owl, p. 91
- W. W. Chapman
- Marmosa as a Stowaway Again, p. 91
- G. E. Potter
Quotations
- The Peking Skull, p. 92
- G. Elliot Smith
Scientific Books
- ----------------, pp. 92-95
- Titanotheres of Ancient Wyoming, Dakota and Nebraska
- Henry Fairfield Osborn
- Review author[s]: Alfred S. Romer
Scientific Apparatus and Laboratory Methods
- A Simple Method for the Germination of Oospores of Sclerospora graminicola, p. 95
- Makoto Hiura
- A Practical Flagella and Capsule Stain for Bacteria, pp. 95-96
- Harry D. Bailey
Special Articles
- An Attempt to Produce Mutations by the Use of Electricity, pp. 96-97
- W. R. Horlacher
- The Fecundity of the Oyster, pp. 97-98
- Paul S. Galtsoff
- The Oil Absorption of Shell Eggs, p. 98
- T. L. Swenson; H. H. Mottern
Science News, pp. x+xii+xiv
Previous Issue: New Series, Vol. 72, No. 1855, Jul. 18, 1930
Next Issue: New Series, Vol. 72, No. 1857, Aug. 1, 1930