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Science, New Series, Vol. 75, No. 1934, Jan. 22, 1932


Previous Issue: New Series, Vol. 75, No. 1933, Jan. 15, 1932
Next Issue: New Series, Vol. 75, No. 1935, Jan. 29, 1932


Front Matter (2 pp.)
Certain Aspects of Henry's Experiments on Electromagnetic Induction, pp. 87-92
Joseph S. Ames


The American Association for the Advancement of Science
The Relationships of the Natural Sciences and the Social Sciences in Agricultural Education in the United States, pp. 92-96
W. C. Coffey


Scientific Events
The Importation of Scientific Specimens and Apparatus into Great Britain, p. 97
The University of Porto Rico and the U. S. Department of Agriculture, p. 97
To Guadalupe Island, pp. 97-98
John Thomas Howell
Professorships at Yale University in Memory of Gibbs and Sumner, p. 98
Award of the First Richards Gold Medal to Professor Arthur A. Noyes, pp. 98-99


Scientific Notes and News, pp. 99-102


Discussion
Definition of a Mathematical Group, pp. 102-103
G. A. Miller
Authors' Abstracts, pp. 103-104
Marcus I. Goldman
The Distribution of State Agricultural Experiment Station Bulletins to Foreign Countries, pp. 104-105
J. G. Leach; H. Macy; C. H. Bailey
Auditory Action Currents, p. 105
George Kreezer; Hans Darge
Thallium Poisoning and Soil Fertility, pp. 105-106
S. C. Brooks
Essential Fatty Acids and Goiter Producing Substances, p. 106
F. E. Chidester
The Discovery of the Oestrus Cycle in Man and Other Mammals, p. 107
Walter Landauer
Chromosome Numbers in Ulmus, p. 107
Ruth I. Walker


Scientific Apparatus and Laboratory Methods
Photomicrography with a Vest Pocket Camera, pp. 107-108
Oscar W. Richards
A New Technique for Obtaining Oospores of the Hop Downy Mildew by Inoculating Cotyledons, p. 108
Walter Jones


Special Articles
On the Variation of the Oxygen Content of Cultural Solutions, pp. 108-109
W. A. Cannon
A Diaporthe Canker of American Elm, pp. 110-111
Blythe G. Richmond
A New Bacterial Disease of Pears, p. 111
Feliciano M. Clara
The Production of Mucification of the Vaginal Epithelium of Rodents by the Oestrous Hormone, pp. 111-112
Roland K. Meyer; Willard M. Allen


Books Received, p. 112
Science News, pp. 8a+9a+10a

Previous Issue: New Series, Vol. 75, No. 1933, Jan. 15, 1932
Next Issue: New Series, Vol. 75, No. 1935, Jan. 29, 1932



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