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Science, New Series, Vol. 106, No. 2751, Sep. 19, 1947


Previous Issue: New Series, Vol. 106, No. 2750, Sep. 12, 1947
Next Issue: New Series, Vol. 106, No. 2752, Sep. 26, 1947


Front Matter (2 pp.)
The Role of Microorganisms in Acid Mine Drainage: A Preliminary Report, pp. 253-256
Arthur R. Colmer; M. E. Hinkle

Reconnaissance Soil Survey Work in Japan, pp. 256-258
C. L. W. Swanson

News and Notes, pp. 259-264


Comments by Readers
Promotion and Inhibition of Growth, p. 265
Description of Centrifuge Operations in Terms of Duration and Speed, p. 265
The Results of Creatinine, Hippurate, and Inulin Clearance Estimations in Rats, p. 265


Technical Papers
Relative Sensitivity of Dormant and Germinating Seeds to 2,4-D, pp. 266-267
John W. Mitchell; James W. Brown
Inactivation of Certain Neurotropic Viruses in vitro by Serum Lipids, pp. 267-268
J. Casals; Peter K. Olitsky
The Abundance of Thallium in the Earth's Crust, p. 268
L. H. Ahrens
Reaction of Certain Plant Growth Regulators with Ion Exchangers, pp. 268-270
Robert J. Weaver
Granulosa Cell Tumors in Intrapancreatic Ovarian Grafts in Castrated Mice, p. 270
Min Hsin Li; W. U. Gardner
Differential Phytotoxicity of Metabolic By-Products of Helminthosporium victoriae, pp. 270-271
Frances Meehan; H. C. Murphy
Application of ''Metabolite Antagonism'' to Cancer Research, pp. 271-272
David M. Greenberg; Martin P. Schulman


In the Laboratory
A Slide Rule for Determining Chicken Red Cell Agglutination Titer, p. 273
M. C. Davies
Olive Oil as a Solvent for Certain Organic Vapors, pp. 274-275
R. Macy; B. Gehauf
New Rectal Culture Tube, p. 275
Joseph Felsen
Comparison of Hematocrit Methods, pp. 275-276
Paul L. McLain
The Halogen-Metal Interconversion Reaction and Its Application to the Synthesis of Nicotinic Acid Labeled with Isotopic Carbon, p. 277
Arthur Murray; W. W. Foreman; Wright Langham
Analytical Determination of Basic Groups in Amino Acids and Proteins, p. 277
D. P. Grettie


Book Reviews
----------------, p. 278
Fundamental Chemistry: An Elementary Textbook for College Classes
Horace G. Deming
Review author[s]: Therald Moeller
----------------, p. 278
Visible Speech
Ralph K. Potter; George A. Kopp; Harriet C. Green
Review author[s]: T. E. Lynch
----------------, p. 278
Glacial Geology and the Pleistocene Epoch
Richard Foster Flint
Review author[s]: Francis D. Hole

Previous Issue: New Series, Vol. 106, No. 2750, Sep. 12, 1947
Next Issue: New Series, Vol. 106, No. 2752, Sep. 26, 1947



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