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Science, New Series, Vol. 25, No. 629, Jan. 18, 1907


Previous Issue: New Series, Vol. 25, No. 628, Jan. 11, 1907
Next Issue: New Series, Vol. 25, No. 630, Jan. 25, 1907


Front Matter (1 p.)
The Present and Future of the American Chemical Society, pp. 81-95
W. F. Hillebrand

The Thirteenth Annual Meeting of the American Mathematical Society, pp. 95-96
F. N. Cole

The American Physiological Society, pp. 96-98
Lafayette B. Mendel

The American Society of Vertebrate Paleontologists, pp. 98-99
Marcus S. Farr


Scientific Books
The Bulletin of the American Museum of Natural History, pp. 99-104
The Relation of Leaf Structure to Physical Factors
Edith S. Clements
Beet-Sugar Manufacture
H. Claassen
Review author[s]: L. P. Gratacap; Thomas H. Kearney; F. G. Wiechmann


Scientific Journals and Articles, pp. 104-105
Societies and Academies, pp. 105-106


Discussion and Correspondence
Polyembryony and Sex-Determination, pp. 106-107
Wm. A. Riley
Variation or Mutation?, pp. 107-108
Arthur Erwin Brown
New Mexico Geology, p. 109
C. H. Gordon
Geological Work in Arkansas by Professor Purdue, pp. 109-110
Chas. D. Walcott


Special Articles
Evidence of Man in the Loess of Nebraska, pp. 110-112
Erwin Hinckley Barbour


Astronomical Notes, pp. 112-114
S. I. Bailey

Current Notes on Meteorology, pp. 114-115
R. DeC. Ward

John M. Brooke, pp. 115-116
W. LeConte Stevens

Publications of the American Ethnological Society, pp. 116-117
Scientific Notes and News, pp. 117-120
University and Educational News, p. 120

Previous Issue: New Series, Vol. 25, No. 628, Jan. 11, 1907
Next Issue: New Series, Vol. 25, No. 630, Jan. 25, 1907



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