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Science, New Series, Vol. 73, No. 1883, Jan. 30, 1931


Previous Issue: New Series, Vol. 73, No. 1882, Jan. 23, 1931
Next Issue: New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931


Front Matter (4 pp.)


The American Association for the Advancement of Science
Recent Developments in Photoelectricity, pp. 107-113
C. E. Mendenhall
Psychology's Family Relations among the Sciences, pp. 113-117
Madison Bentley


Obituary
Memorials, p. 117
Recent Deaths, p. 118


Scientific Events
Calendar Reform, p. 118
The Marshall Field Archeological Expedition, p. 119
The Aztec Ruins National Monument, pp. 119-120
The New York State Forest Research Institute, p. 120
The International Congress on Illumination, pp. 120-121


Scientific Notes and News, pp. 121-124


Discussion
The Vampire Bat, pp. 124-125
Marcus Ward Lyon
Concerning Early Diagnosis of Whooping Cough, pp. 125-126
Louis W. Sauer
The Finding of Large Centipedes in Wyoming and Western Nebraska, p. 126
Harold J. Cook
The Excelsior Geyser Again, p. 126
Edwin Linton


Special Correspondence
The Ella Sachs Plotz Foundation for the Advancement of Scientific Investigation, pp. 126-127
Joseph C. Aub


Quotations
Ellwood Hendrick, pp. 128-129


Scientific Books
----------------, p. 129
The Migration of Butterflies
C. B. Williams
Review author[s]: L. O. Howard
----------------, pp. 129-130
Barlow's Tables of Squares, Cubes, Square Roots, Cube Roots and Reciprocals of All Integer Numbers up to 10,000
L. J. Comrie
Review author[s]: Charles H. Smiley


Scientific Apparatus and Laboratory Methods
A Convenient Hydrometer for Determining the Specific Gravity of Heavy Liquids, pp. 130-131
A. C. Tester
Repair of Non-Conductive Galvanometer Strings, p. 131
Chester W. Darrow
A Siphon Moist Chamber for Microscopic Mounts, pp. 131-132
Florence A. McCormick


Special Articles
Some Peculiarities in the Thermo-Electric Properties of Monel Metal, pp. 132-133
Emery Meschter
Strophanthin. XIX. The Dehydrogenation of Strophanthidin and Gitoxigenin, pp. 133-134
Walter A. Jacobs; Elmer E. Fleck
The Fauna of the Middle Devonian Beauvais Sandstone of Missouri, pp. 134-135
Carey Croneis; Arnold D. Hoffman
Responses of Sheep to Zygadenus gramineus, "Death Camas", pp. 135-136
Alvah R. McLaughlin


Books Received, p. 136
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 73, No. 1882, Jan. 23, 1931
Next Issue: New Series, Vol. 73, No. 1884, Special Issue Containing Reports of the Fourth Cleveland Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Feb. 6, 1931



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