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Science, New Series, Vol. 113, No. 2923, Jan. 5, 1951


Previous Issue: New Series, Vol. 112, No. 2922, Dec. 29, 1950
Next Issue: New Series, Vol. 113, No. 2924, Jan. 12, 1951


Volume Information (2 pp.)
Front Matter (1 p.)
An Announcement of the General Officers of the Association, Elected by the Council at Cleveland Last Week, pp. 3a
Tritium in Nature, pp. 1-2
A. V. Grosse; W. M. Johnston; R. L. Wolfgang; W. F. Libby


Technical Papers
Probable Chromosome Number of Fossil Sequoia and Metasequoia Found in Japan, pp. 3-4
Shigeru Miki; Shigeru Hikita
Destruction of Amino Acids during Filter Paper Chromatography, pp. 4-6
Miriam K. Brush; R. K. Boutwell; A. D. Barton; Charles Heidelberger
Effect of Early Cross Transfusion on X-Irradiation Disease, pp. 6-7
Peter F. Salisbury; Paul E. Rekers; Joseph H. Miller; Norman F. Marti
Methane Gas in Water Well, pp. 7-8
Lloyd W. Fisher; William H. Sawyer
Observations on the Fate of Vertebrate Erythrocytes and Hemoglobin Injected into the Blood of the American Cockroach, (Periplaneta americana L.), pp. 9-10
Sergio Bettini; D. S. Sarkaria; R. L. Patton
The Influence of Amount of Food on the Reproduction Rate and Longevity of a Suctorian (Tokophrya infusionum), pp. 10-11
Maria A. Rudzinska
Photoelectric Spot Analysis of Antimony and Bismuth, pp. 11-12
Toshio Sudo; Kitaro Hayase
Synthesis of Enantiomeric α -Cephalins, pp. 12-13
Erich Baer; Jonas Maurukas; Margaret Russell


Comments and Communications
Replacement Control and Biological Control, pp. 14-15
Robert L. Piemeisel; Eubanks Carsner
Solution of the Problem of "Internal Compensation" in Meso Compounds as Afforded by Studies on Analogous Coordination Complexes, p. 15
Reino W. Hakala


Book Reviews
----------------, p. 16
Physical Chemistry
Walter J. Moore
Review author[s]: Edgar F. Westrum
----------------, pp. 16-17
Principles and Practice of Spectrochemical Analysis
Norman H. Nachtrieb
Review author[s]: Cyrus Feldman
----------------, p. 17
An Introduction to Nematology: Anatomy
B. G. Chitwood; M. B. Chitwood
Review author[s]: Lyell J. Thomas
----------------, pp. 17-18
Botany: An Evolutionary Approach
R. Darnley Gibbs
Review author[s]: Harriet B. Creighton


Scientific Book Register, p. 18
News and Notes, pp. 19-24

Previous Issue: New Series, Vol. 112, No. 2922, Dec. 29, 1950
Next Issue: New Series, Vol. 113, No. 2924, Jan. 12, 1951



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