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Previous Issue: New Series, Vol. 68, No. 1750, Jul. 13, 1928
Next Issue: New Series, Vol. 68, No. 1752, Jul. 27, 1928
Front Matter (4 pp.)
The Chemical and Physical Composition of Protoplasm, pp. 45-48
- W. W. Lepeschkin
Our Search for Chlorophyll and for the Vitamins, pp. 48-53
- F. M. Schertz
Scientific Events
- The American Standards Association, pp. 53-54
- The Study of Radiation at Cornell University, p. 54
- Awards for Scientific Exhibits by the American Medical Association, pp. 54-55
- National Research Fellowships in the Biological Sciences, p. 55
- Frank R. Lillie
Scientific Notes and News, pp. 55-58
University and Educational Notes, p. 58
Discussion and Correspondence
- The Production of Mutations by X-Rays in Habrobracon, p. 59
- P. W. Whiting
- Pliocene Urodeles in Western Kansas, pp. 59-60
- L. A. Adams; H. T. Martin
- The Albino Rat, p. 60
- Olive Swezy
- The Hiding Places of Tree-Frogs, pp. 60-61
- Beirne B. Brues
- Centers of Research, p. 61
- S. R. Williams
- Measurement of Rapidly Varying Surface Tension, p. 62
- Victor Cofman
Scientific Apparatus and Laboratory Methods
- A Weight-Driven Kymograph, pp. 62-64
- Alvah R. McLaughlin
Special Articles
- A New Arrangement for Showing the Diurnal Variation in the Intensity of the Earth's-Surface Charge at a Given Place, pp. 64-65
- Fernando Sanford
- The Bacterial Light Organ of Ceratias, pp. 65-66
- Ulric Dahlgren
The American Association for the Advancement of Science
- The Southwestern Division, p. 66
- W. G. McGinnies
Science News, pp. x+xii+xiv
Previous Issue: New Series, Vol. 68, No. 1750, Jul. 13, 1928
Next Issue: New Series, Vol. 68, No. 1752, Jul. 27, 1928