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Science, New Series, Vol. 74, No. 1928, Dec. 11, 1931


Previous Issue: New Series, Vol. 74, No. 1927, Dec. 4, 1931
Next Issue: New Series, Vol. 74, No. 1929, Dec. 18, 1931


Front Matter (8 pp.)
New Contributions in Sterol Metabolism, pp. 579-584
Rudolf Schoenheimer

National Parks in Africa, pp. 584-588
Mary L. Jobe Akeley


Scientific Events
Daniel Gabriel Fahrenheit, pp. 588-589
Waldemar Westergaard
Field Expeditions of the Oriental Institute of the University of Chicago, pp. 589-590
The Sixth International Congress of Genetics, p. 590
C. C. Little
Research Exhibits of the American Association at New Orleans, p. 590


Scientific Notes and News, pp. 591-595


Discussion
Cyclone and Anti-Cyclone, p. 595
Alexander McAdie
The Uncertainty Principle, pp. 595-596
W. A. Noyes
The Uncertainty Principle and Free Will, p. 596
Henry Margenau
The Classification of Pythium, pp. 596-597
C. P. Sideris
"Taste Deficiency" for Creatine, pp. 597-598
Roger J. Williams


Scientific Books
----------------, pp. 598-599
The History and Work of Harvard Observatory, 1839-1927
Solon I. Bailey
Review author[s]: Frederick E. Brasch


Scientific Apparatus and Laboratory Methods
A Method for the Study of Chromosomes in Entire Insect Eggs, pp. 600-601
M. Louise Schmuck; C. W. Metz
Reconstruction Work by the Use of Cellophane, p. 601
E. R. Van Der Jagt


Special Articles
Simultaneity in the Onset of Poliomyelitis, pp. 601-602
Simon Flexner
Primitive Or Filterable Forms of Bacteria, pp. 602-603
J. M. Sherman; C. E. Safford
Diamagnetism in Metal Crystals, pp. 603-604
Alexander Goetz; A. B. Focke


The National Academy of Sciences. II, pp. 604-608
Books Received, p. 608
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1927, Dec. 4, 1931
Next Issue: New Series, Vol. 74, No. 1929, Dec. 18, 1931



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