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Science, New Series, Vol. 82, No. 2116, Jul. 19, 1935


Previous Issue: New Series, Vol. 82, No. 2115, Jul. 12, 1935
Next Issue: New Series, Vol. 82, No. 2117, Jul. 26, 1935


Front Matter (1 p.)
The South's Position in the Mineral Industry, pp. 47-51
R. S. Poor

The Geologic and the Cosmic Age Scales, pp. 51-53
George D. Louderback; Robley D. Evans; B. Gutenberg; G. P. Kuiper; Richard C. Tolman; Paul S. Epstein


Scientific Events
The Royal Observatory at Greenwich, p. 54
Introduction into the United States of Disease-Resistant Plants, pp. 54-55
The Union Catalogue of Medical Literature, p. 55
The Mycological Society of America, pp. 55-56
The Reorganization of the Neurological Institute of New York City, p. 56
Memorials and Recent Deaths, p. 56


Scientific Notes and News, pp. 57-60


Discussion
Human Remains in Gravel near West Union, Minn., p. 60
Henry Retzek
Killarnean and Earlier Granite, pp. 60-61
Alfred C. Lane
The Melodies of Verse, pp. 61-62
Wilbur L. Schramm
Effect of Cortin on Intra-Ocular Tension in Glaucoma, p. 62
Emanuel M. Josephson
The New Active Principle of Ergot, pp. 62-63
Marvin R. Thompson


Scientific Books
A Source Book of Physics, pp. 63-64
A Source-Book in Physics
William Francis Magie
Review author[s]: Henry Crew
X-Rays, pp. 64-65
X-Rays in Theory and Experiment
Arthur H. Compton; Samuel K. Allison
Review author[s]: David L. Webster


Special Articles
Concanavalin A and Hemagglutination, pp. 65-66
James B. Sumner; Stacey F. Howell; Alexander Zeissig
Changes in the Position of Chick Embryos after the Eighteenth Day of Incubation, pp. 66-67
Nelson F. Waters
Maternal Behavior in Male Rats, pp. 67-68
Morvyth McQueen-Williams
Egg Quantity and the Respiratory Rates of Several Marine Eggs, p. 68
D. M. Whitaker


Scientific Apparatus and Laboratory Methods
Stroboscopic Observation of Ciliary Movement in the Protozoa, pp. 68-70
J. C. Hammond
Darkfield Micromanipulation with an Ultropaque Illuminator, p. 70
M. J. Kopac


Books Received, p. 70
Science News, pp. 5a-7a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 82, No. 2115, Jul. 12, 1935
Next Issue: New Series, Vol. 82, No. 2117, Jul. 26, 1935



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