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Science, New Series, Vol. 98, No. 2554, Dec. 10, 1943


Previous Issue: New Series, Vol. 98, No. 2553, Dec. 3, 1943
Next Issue: New Series, Vol. 98, No. 2555, Dec. 17, 1943


Front Matter (4 pp.)
The Mexican Volcano Paricutin, pp. 501-505
Parker D. Trask

Presentation of the Sedgwick Memorial Medal, pp. 505-506


Obituary
Elmer Darwin Ball, pp. 506-507
Chas. T. Vorhies
Deaths and Memorials, pp. 507-508


Scientific Events
The Proposed Development of Wayne University, pp. 508-509
Rare Chemicals, p. 509
The Sugar Research Foundation, pp. 509-510
The Alabama Academy of Science, p. 510
Winnie McGlamery
Awards of the American Society of Mechanical Engineers, p. 510


Scientific Notes and News, pp. 511-513


Discussion
Tryptophan and Phytohormone Precursors, pp. 513-515
G. S. Avery; J. Berger
The Roots of Spinal Nerves, p. 515
Donald Duncan
Taxonomy and Genonomy, pp. 515-516
Carl Epling
Isolation of Influenza a by Intra-Allantoic Inoculation of Untreated Throat Washings, p. 516
Minnie Thigpen; James Crowley


Scientific Books
Naturalist at Large, pp. 516-518
Naturalist at Large
Thomas Barbour
Review author[s]: T. D. A. Cockerell
Developments in Science, p. 518
Forward with Science
Rogers D. Rusk
Review author[s]: S. A. Korff


Special Articles
Retardation of Rancidity by Sulfhydryl Compounds, pp. 518-520
Paul György; Eric T. Stiller; Martin B. Williamson
Vitamin B6 Deficiency Anemia in the Dog, pp. 520-522
Susan Gower Smith; Robert Curry; Harold Hawfield


Scientific Apparatus and Laboratory Methods
Technique for Stroboscopic Studies of Insect Flight, pp. 522-524
Leigh E. Chadwick
The Coagulum-Contact Technic in Traumatic Rupture of the Liver in Dog and Man, p. 524
Machteld E. Sano; Clarence A. Holland


Science News, pp. 8-10

Previous Issue: New Series, Vol. 98, No. 2553, Dec. 3, 1943
Next Issue: New Series, Vol. 98, No. 2555, Dec. 17, 1943



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