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Science, New Series, Vol. 92, No. 2378, Jul. 26, 1940


Previous Issue: New Series, Vol. 92, No. 2377, Jul. 19, 1940
Next Issue: New Series, Vol. 92, No. 2379, Aug. 2, 1940


Front Matter (4 pp.)
Remarks on Professions in Medicine, pp. 65-72
Alfred E. Cohn


Scientific Events
The Printing Press of Leonardo Da Vinci, p. 72
Laboratory of the Commission on the Standardization of Biological Stains, p. 73
Meeting of the Pan-American Congress of Ophthalmology at Cleveland, p. 73
Conference on Applied Nuclear Physics, pp. 73-74
Retiring Members of the Faculty of the Ohio State University, p. 74
Recent Deaths, pp. 74-75


Scientific Notes and News, pp. 75-77


Discussion
The Nature of the Intermolecular Forces Operative in Biological Processes, pp. 77-79
Linus Pauling; Max Delbrück
A New Calculation of the C = C Bond Strength and of Certain Resonance Energies, p. 79
Dorothy Wrinch
Avoiding Obvious Residue from Nicotine-Bentonite Sprays, p. 79
C. G. Vinson; S. A. McCrory
Some Results of Colchicine Injections, p. 80
Edna Higbee


Scientific Books
Aviation Medicine, pp. 80-81
Principles and Practice of Aviation Medicine
Harry G. Armstrong
Review author[s]: Yandell Henderson


Societies and Meetings
The Academy Conference, pp. 82-85
S. W. Bilsing


Reports
Grants for Research of the Geological Society of America, pp. 85-88


Special Articles
The Susceptibility of Chicks to Diphtheria Bacilli and Toxin, pp. 88-89
Martin Frobisher
The Anti-Tryptic Properties of Heparin, pp. 89-90
M. K. Horwitt
Glycine--An Essential Factor for the Growth of Bacteriophage, p. 91
Emory L. Ellis; John Spizizen


Scientific Apparatus and Laboratory Methods
Glass Tubes for Rearing Phlebotomus and Other Insects, pp. 91-92
Marshall Hertig
The Administration of Drugs to Rats, p. 92
Dorothy Nelson
Keep Bottle-Tops Free from Dust, p. 92
H. F. Pierce


Science News, pp. 6+8-9
Back Matter (2 pp.)

Previous Issue: New Series, Vol. 92, No. 2377, Jul. 19, 1940
Next Issue: New Series, Vol. 92, No. 2379, Aug. 2, 1940



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