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Science, New Series, Vol. 79, No. 2049, Apr. 6, 1934


Previous Issue: New Series, Vol. 79, No. 2048, Mar. 30, 1934
Next Issue: New Series, Vol. 79, No. 2050, Apr. 13, 1934


Front Matter (2 pp.)
Research on Heavy Hydrogen at Princeton, pp. 303-305
Hugh S. Taylor

A Monumental Reference Work on Geography, pp. 305-311
Douglas Johnson


Scientific Events
British Industries Fair, pp. 311-312
The Floating Congress of the Pan American Medical Association, p. 312
Meeting of the New York Branch of the American Psychological Association, pp. 312-313
Delegates of the National Research Council to the Chemical Union and Congress at Madrid, p. 313
Recent Deaths, p. 313


Scientific Notes and News, pp. 313-317


Discussion
Professional Service and Codes, pp. 317-318
W. M. Grosvenor
Genetics and Colors of the Siamese Fighting Fish, Betta Splendens, pp. 318-319
H. B. Goodrich; Rowena N. Mercer
"Alfalfa Yellows", p. 319
F. W. Poos; H. L. Westover
Experiment on the Effect of Fatigue in Insolation, p. 319
David T. Griggs
Note on the Dust Storm of November 13, 1933, p. 320
Edward H. Watson


Reports
The Ella Sachs Plotz Foundation for the Advancement of Scientific Investigation, pp. 320-321


Scientific Apparatus and Laboratory Methods
A Rule for the Interpretation of Melting Point Diagrams, pp. 321-322
Roy F. Newton
An Inexpensive Efficient Relay, p. 322
Peter T. Black


Special Articles
Some Aspects of the Influence of Temperature on Copepods, pp. 323-324
R. E. Coker
Amebiasis in Reptiles, pp. 324-325
Herbert L. Ratcliffe; Quentin M. Geiman
The Separation of Carotenes by Adsorption on Magnesium Oxide, pp. 325-326
Harold H. Strain


Books Received, p. 326
Science News, pp. 10a-12a
Back Matter (4 pp.)

Previous Issue: New Series, Vol. 79, No. 2048, Mar. 30, 1934
Next Issue: New Series, Vol. 79, No. 2050, Apr. 13, 1934



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