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Science, New Series, Vol. 91, No. 2364, Apr. 19, 1940


Previous Issue: New Series, Vol. 91, No. 2363, Apr. 12, 1940
Next Issue: New Series, Vol. 91, No. 2365, Apr. 26, 1940


Front Matter (13 pp.)
Recent Advances in Chemotherapy, pp. 369-373
M. L. Crossley

Lo, the Poor Whale!, pp. 373-376
Robert Cushman Murphy


Obituary
Friedrich Emich: 1860-1940, pp. 376-377
Joseph B. Niederl
Recent Deaths and Memorials, p. 377


Scientific Events
Publication of a New Physiological Journal in Scandinavia, p. 377
Award of Guggenheim Fellowships, pp. 377-379
The Finney-Howell Research Foundation, Inc., p. 379
The Industrial Research Institute, p. 379
The Bicentennial Week Celebration of the University of Pennsylvania, pp. 379-380


Scientific Notes and News, pp. 380-382


Discussion
A Chytrid in Relation to Chlorotic Streak Disease of Sugar-Cane, pp. 382-383
C. W. Carpenter
The Genus Listerella Pirie, p. 383
J. Harvey Pirie
Scientific Conscience, pp. 383-384
I Bernard Cohen
"Roger Bacon was Mistaken", pp. 384-385
Fernando Sanford; M. W. Lyon; G. Wakeham


Scientific Books
The Theory of Numbers, p. 385
Modern Elementary Theory of Numbers
Leonard Eugene Dickson
Review author[s]: A. E. Ingham
A Mathematical Classic, p. 385
Topological Groups
L. Pontrjagin
Review author[s]: Garrett Birkhoff


Reports
The Engineering Foundation, pp. 386-387


Special Articles
Anthelmintic Activity of Crystalline Papain, pp. 387-388
Julius Berger; Conrado F. Asenjo
Conversion of Estradiol to Estrone in Vivo, p. 388
William R. Fish; Ralph I. Dorfman
Tomato Pomace in the Diet, pp. 388-389
Clive M. McCay; S. E. Smith


Scientific Apparatus and Laboratory Methods
The Preparation of Purified House-Dust Extracts, pp. 389-390
Charlotte H. Boatner; B. G. Efron; R. I. Dorfman
A Labor-Saving Technique for Leaf Samples in Histological Work, p. 390
William E. Gordon


Science News, pp. 10+12+14
Back Matter (2 pp.)

Previous Issue: New Series, Vol. 91, No. 2363, Apr. 12, 1940
Next Issue: New Series, Vol. 91, No. 2365, Apr. 26, 1940



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