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Science, New Series, Vol. 110, No. 2869, Dec. 23, 1949


Previous Issue: New Series, Vol. 110, No. 2868, Dec. 16, 1949
Next Issue: New Series, Vol. 110, No. 2870, Dec. 30, 1949


Front Matter, p. 696
The United Nations Scientific Conference for the Conservation and Utilization of Resources, pp. 675-678
Carl N. Gibboney

Age Determinations by Radiocarbon Content: Checks with Samples of Known Age, pp. 678-680
J. R. Arnold; W. F. Libby


Technical Papers
An Inverse Decibel Log Frequency Method for Determination of the Transfer Functions of Psychobiological Systems, pp. 681-684
George L. Kreezer
Some New Finds of Fossil Ganoids in the Virginia Triassic, pp. 684-686
Francis M. Baer; William H. Martin
Colchicine Poisoning in Relation to Hemerocallis and Some Other Plants, pp. 686-687
Hamilton P. Traub
Preparation of a Radioactive Oxazine Dye, pp. 687-688
Henry A. Sloviter
Occurrence and Life Histories of Commercial Shrimp, pp. 688-689
Martin D. Burkenroad
Periodate Oxidation in the Study of the Structure of Dextrans, pp. 689-690
P. W. Kent
The Potentiating Effect of Glucose and Its Metabolic Products on Barbiturate Anesthesia, pp. 690-691
Paul D. Lamson; Margaret E. Greig; B. Howard Robbins


Comments and Communications
On the Discovery of the Action of Colchicine on Mitosis in 1889, p. 692
O. J. Eigsti; P. Dustin; N. Gay-Winn
A Nomination for the ISCC, p. 692
John Pim Carter
Solar Rotation and Kepler's Laws, pp. 692-693
Cornelius O'Connor
Corneal Contact Lens Reference?, p. 693
Katherine Ferguson Chalkley
Guarded Circuit Bridge, p. 693
Stanley I. Reynolds
Report from Sweden, pp. 693-695
Lotte R. Weilheimer


Book Reviews
----------------, p. 696
Isotopic Tracers and Nuclear Radiations: With Applications to Biology and Medicine
William E. Siri
Review author[s]: C. W. Sheppard


News and Notes, pp. 697-700

Previous Issue: New Series, Vol. 110, No. 2868, Dec. 16, 1949
Next Issue: New Series, Vol. 110, No. 2870, Dec. 30, 1949



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