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Science, New Series, Vol. 91, No. 2350, Jan. 12, 1940


Previous Issue: New Series, Vol. 91, No. 2349, Jan. 5, 1940
Next Issue: New Series, Vol. 91, No. 2351, Jan. 19, 1940


Front Matter (8 pp.)


The American Association for the Advancement of Science
Pathways of Medical Progress, pp. 25-31
Carl J. Wiggers


The Synthesis of Vitamin K1, pp. 31-36
Louis F. Fieser


Obituary
Jonas Bernard Nathanson, pp. 36-37
Chas. W. Prine
In Honor of George Frederick Arps, p. 37
Recent Deaths, p. 37


Scientific Events
The New Federal Nutritions Laboratory at Cornell University, pp. 37-38
The American Standards Association, pp. 38-39
Convention of the American Institute of Electrical Engineers, p. 39
Officers of the American Association for the Advancement of Science, pp. 39-40


Scientific Notes and News, pp. 40-43


Discussion
Two Paradoxes, p. 43
Paul R. Heyl
Oxygen Relations in Hydrophytes, pp. 43-44
W. A. Cannon
Hardiness of the Paper-Mulberry Tree, p. 44
E. A. Andrews
The Galton Laboratory, pp. 44-45
R. A. Fisher


Quotations
Chemistry in the Service of the State, pp. 45-46


Scientific Books
The Life and Letters of Lord Rutherford, pp. 46-48
Rutherford: Being the Life and Letters of the Rt. Hon. Lord Rutherford, O.M.
A. S. Eve
Review author[s]: W. F. G. Swann


Special Articles
Studies on the Fate of Plasma Prothrombin, pp. 48-50
William DeW. Andrus; Jere W. Lord; Joseph T. Kauer
Impedance of Bimolecular Films, pp. 50-51
R. B. Dean; H. J. Curtis; K. S. Cole


Scientific Apparatus and Laboratory Methods
Mass Production of Vaccine against Typhus Fever of the European Type, pp. 51-52
Hans Zinsser; Harry Plotz; John F. Enders


Science News, pp. 6+8-9
Back Matter (1 p.)

Previous Issue: New Series, Vol. 91, No. 2349, Jan. 5, 1940
Next Issue: New Series, Vol. 91, No. 2351, Jan. 19, 1940



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