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Science, New Series, Vol. 100, No. 2605, Dec. 1, 1944


Previous Issue: New Series, Vol. 100, No. 2604, Nov. 24, 1944
Next Issue: New Series, Vol. 100, No. 2606, Dec. 8, 1944


Front Matter (2 pp.)
On the Teaching of Mathematics, pp. 479-486
F. D. Murnaghan

Cultural Interchange between the Soviet Union and the United States, pp. 486-487
Stuart Mudd


Obituary
Frere Marie-Victorin, pp. 487-488
Francis E. Lloyd; Jules Brunel
Albert Kingsbury, pp. 488-489
Edwin B. Davis
Recent Deaths, p. 489


Scientific Events
The American Academy of Tropical Medicine, pp. 489-490
The National Academy of Sciences, p. 490
Medals Awarded by the Royal Society, p. 490
Award of the Walter Reed Medal, pp. 490-491
Award of the Perkin Medal, p. 491


Scientific Notes and News, pp. 491-494


Discussion
Utilization of "Pore Spaces" of Semi-Permeable Membranes, pp. 494-495
William A. Moor
Improbability and Impossibility, pp. 495-496
H. M. Dadourian; Anatol James Shneiderov


Scientific Books
Mitosis, pp. 496-497
Mitosis
Franz Schrader
Review author[s]: C. W. Metz


Reports
Smith College Conference on Plant Embryo Culture, pp. 497-498
Albert F. Blakeslee


Special Articles
The Cholinesterases in the Light of Recent Findings, pp. 499-500
Bruno Mendel; Harry Rudney
The Antibacterial Action of Penicillin against Gram Negative Organisms, pp. 500-501
Gladys L. Hobby
Relation of Dosage to Survival Time of Arsenite-Injected Roaches, pp. 501-503
J. Franklin Yeager; Sam C. Munson
The Motion of Small Particles in Magnetic Fields, pp. 503-504
Gabriel Kane; Charles B. Reynolds


Scientific Apparatus and Laboratory Methods
The Blood-Saline Coagulation Time Test, p. 505
Alfred Lewin Copley; Ralph B. Houlihan
A Constant Vacuum Apparatus, pp. 505-506
John W. Campbell; J. W. Beard


Science News, p. 10

Previous Issue: New Series, Vol. 100, No. 2604, Nov. 24, 1944
Next Issue: New Series, Vol. 100, No. 2606, Dec. 8, 1944



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