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Science, New Series, Vol. 96, No. 2501, Dec. 4, 1942


Previous Issue: New Series, Vol. 96, No. 2500, Nov. 27, 1942
Next Issue: New Series, Vol. 96, No. 2502, Dec. 11, 1942


Front Matter (5 pp.)


The American Association for the Advancement of Science
Postponement of the New York Meeting, p. 501
F. R. Moulton


Wartime Chemicals from Natural Gas, pp. 502-505
Gustav Egloff

Influence of the Environment on the Expression of Hereditary Factors in Relation to Plant Breeding, pp. 505-508
S. H. Yarnell


Scientific Events
Recent Deaths, p. 508
Transfer to the United States of the Headquarters of the International Society of Surgery, pp. 508-509
Genetics in the U. S. S. R., p. 509
The St. Louis Meeting of the American Society of Agronomy, pp. 509-510
The Upper Peninsula Mineral Resources Conference, p. 510
The Engineering College Research Association, pp. 510-511


Scientific Notes and News, pp. 511-513


Discussion
The Old Starfish-Clam Question, pp. 513-515
A. M. Reese
The First Free-Living Freshwater Jellyfish from South America, p. 515
Carlos E. Porter; Waldo L. Schmitt
Deformation of Rock Strata by Explosions, p. 515
L. L. Nettleton
Segregation of Type Specimens, pp. 515-516
F. R. Fosberg


Quotations
The Pittsburgh Meeting of the American Association for the Advancement of Science, p. 516
Theodore W. Richards


Scientific Books
Chemistry, pp. 516-517
The Chemistry of Organic Medicinal Products
Glenn L. Jenkins; Walter H. Hartung
Chemistry of Insecticides and Fungicides
Donald E. H. Frear
Review author[s]: Marston Taylor Bogert
A Freshman Text in Mathematics, pp. 517-518
Basic College Mathematics, A General Introduction
Carl Wallace Munshower; James Fletcher Wardwell
Review author[s]: Albert A. Bennett


Special Articles
An Infectious Agent from Cases of Atypical Pneumonia Apparently Transmissible to Cotton Rats, pp. 518-519
Monroe D. Eaton; Gordon Meikeljohn; Wm. VanHerick; John C. Talbot
Destruction of Hypertensin and Pepsitensin by an Aminopeptidase Obtained from Yeast, pp. 519-520
R. Croxatto; H. Croxatto
The Occurrence of Intravascular Agglutinations in Avian Malaria, pp. 520-521
Arthur R. Lack


Scientific Apparatus and Laboratory Methods
The Preparation of a Sucrase-Free Taka-Maltase, pp. 521-522
Jacob Feigenbaum
A Platinum Scoop for Transferring Sterile Powders, p. 522
A. Packchanian


Science News, pp. 10+12+14

Previous Issue: New Series, Vol. 96, No. 2500, Nov. 27, 1942
Next Issue: New Series, Vol. 96, No. 2502, Dec. 11, 1942



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