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Science, New Series, Vol. 104, No. 2701, Oct. 4, 1946


Previous Issue: New Series, Vol. 104, No. 2700, Sep. 27, 1946
Next Issue: New Series, Vol. 104, No. 2702, Oct. 11, 1946


Growth and Aging Problems in Agriculture, pp. 307-312
Samuel Brody


Technical Papers
Cardiac Failure in Cattle on Vitamin E-Free Rations as Revealed by Electrocardiograms, pp. 312-313
Thor W. Gullickson; Chas. E. Calverley
Influence of Purified Lignin on Nitrification in Soil, pp. 313-315
James E. Fuller
Administration of Streptomycin in Peanut Oil and Beeswax and in Solvecillin, pp. 315-317
John A. Kolmer; Amedeo Bondi; Halsey F. Warner; Catherine Dietz
Effect of Di-Isopropyl Fluorophosphate (DFP) on the Action Potential of Muscle, p. 317
René Couteaux; Harry Grundfest; David Nachmansohn; Mortimer A. Rothenberg
Derivation, Interpretation, and Application of the Second Law of Thermodynamics, pp. 317-318
P. G. Nutting


News and Notes, pp. 319-326


In the Laboratory
A Collapsible Metal Stirrer, p. 326
J. David Reid; Edmund M. Buras
Penicillin Blood-Level Determinations with a Streptococcus dysgalactiae Resistant to Normal Blood Inhibitors, pp. 327-328
J. C. Kakavas; E. G. Scott


Letters to the Editor
Taxonomy and the Biologists, pp. 328-329
Z. P. Metcalf
Dormant and Adventitious Buds, p. 329
Isador Aaron
Aseptic Cultivation of Excised Plant Embryos, pp. 329-330
Margaret Newcomb; Ralph E. Cleland
A Regrettable Error, p. 330
Joel W. Hedgpeth
Potentiation of the Antibiotic Activity of Aspergillic Acid by Bismuth, p. 330
Andres Goth
Disease Control in Frogs, p. 330
S. Meryl Rose
A Further Note on the Meaning of Normal, pp. 330-331
Chauncey D. Leake
Iron Concentrations in Cholinesterase Preparations, p. 331
Robert D. Barnard
Hypoparatypes, p. 331
Hobart M. Smith
Rigid Thinking in the Social Sciences--A Vital Need, pp. 331-332
Zachariah Subarsky
On the Question of Russian Scientists, p. 332
William Marquette


Book Reviews
----------------, pp. 332-333
Electron and Nuclear Counters--Theory and Use
A. Korff
Review author[s]: Gladys A. Anslow
----------------, p. 333
The Effect of Smallpox on the Destiny of the Amerindian
E. Wagner Stearn; Allen E. Stearn
Review author[s]: Georg K. Neumann
----------------, p. 333
Theory and Practice of Filtration
George D. Dickey; Charles L. Bryden
Review author[s]: H. L. Olin
----------------, pp. 333-334
Human Embryology
Bradley M. Patten
Review author[s]: Madge Thurlow Macklin
----------------, p. 334
Diseases of the Retina
Herman Elwyn
Review author[s]: W. L. Benedict

Previous Issue: New Series, Vol. 104, No. 2700, Sep. 27, 1946
Next Issue: New Series, Vol. 104, No. 2702, Oct. 11, 1946



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