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Science, New Series, Vol. 106, No. 2753, Oct. 3, 1947


Previous Issue: New Series, Vol. 106, No. 2752, Sep. 26, 1947
Next Issue: New Series, Vol. 106, No. 2754, Oct. 10, 1947


Front Matter (2 pp.)
The Nucleus in Relation to Heredity and Sex, pp. 305-308
Edward C. Jeffrey

Poland in the World of Science, pp. 308-309
Ignace Zlotowski


Association Affairs
Association Membership Dues Increased, p. 310
F. R. Moulton


News and Notes, pp. 311-314


Comments by Readers
Taxonomists and Zoologists, pp. 315-316
The Effects of a New Class of Anti-Filarial Compounds, Cyanines, p. 316
The Effects of a New Class of Anti-Filarial Compounds, Cyanines, p. 316
The Results of Determinations of the Growth Hormones of Several Species of Plants, p. 316
Certain Parts of the Recent Paper of Taplin and Bryan, p. 316


Technical Papers
DDT for Powder-Post Beetle Control in Bamboo, p. 317
Harold K. Plank
Physiological Availability of Iodine in Dithymol Diiodide, pp. 317-319
R. R. Baldwin; R. Thiessen; E. E. McInroy
Plasma L-Methionine Levels Following Intravenous Administration in Humans, pp. 319-320
Harold A. Harper; Laurance W. Kinsell; Harry C. Barton
Activation of Eggs by Oxidation-Reduction Indicators, p. 320
Matilda Moldenhauer Brooks
Irreversible Differentiation in Certain Plant Cell Lineages, pp. 320-322
Robert Bloch
Separate Localization in the Medulla Oblongata of the Vagal Inspiratory and Expiratory Reflex Centers, pp. 322-323
Oscar A. M. Wyss
A New Disease of the Variegated Cutworm, Peridroma margaritosa (Haw.), p. 323
Edward A. Steinhaus


In the Laboratory
An Interval-Timing, Automatically Resetting Switch to Operate after Any Given Number of Counts, p. 324
Julius R. Ballew; Amedeo S. Marrazzi
Simplified Techniques for Inoculating Chick Embryos and a Means of Avoiding Egg White in Vaccines, pp. 324-325
W. I. B. Beveridge
Use of Trisodium Phosphate with Herbarium Material and Microfossils in Peat, pp. 325-326
William S. Benninghoff
Three-Dimensional Graphs, pp. 326-327
E. F. Hopkins
Penicillin as an Agent for Sterilization of Protozoan Cultures, p. 327
Gerald R. Seaman
A Monitoring Probe for Radiochemistry Laboratories, pp. 327-328
Claude R. Schwob; Raymond Nether
Use of the Hydra for Pharmacological Study, p. 328
Stata Norton; Edwin J. De Beer


Book Reviews
----------------, p. 329
Radioactive Tracers in Biology: An Introduction to Tracer Methodology
Martin D. Kamen
Review author[s]: M. C. Shelesnyak
----------------, pp. 329-330
Descriptive and Sampling Statistics
John Gray Peatman
Review author[s]: J. R. Wittenborn

Previous Issue: New Series, Vol. 106, No. 2752, Sep. 26, 1947
Next Issue: New Series, Vol. 106, No. 2754, Oct. 10, 1947



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