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Science, New Series, Vol. 70, No. 1812, Sep. 20, 1929


Previous Issue: New Series, Vol. 70, No. 1811, Sep. 13, 1929
Next Issue: New Series, Vol. 70, No. 1813, Sep. 27, 1929


Front Matter (4 pp.)


The British Association for the Advancement of Science
Africa and Science, pp. 269-274
Jan H. Hofmeyr


Obituary
George Perkins Merrill, pp. 274-275
Marcus Benjamin
Recent Deaths, p. 275


Scientific Events
Native Races in New Guinea, p. 276
Discontinuance of the Chilean Observatory of the University of California, p. 276
The National Forests of Alaska, pp. 276-277
The Graduate School of the U. S. Department of Agriculture, pp. 277-278
Formal Opening of the Chemical Laboratory of Princeton University, pp. 278-279


Scientific Notes and News, pp. 279-281
University and Educational Notes, p. 281


Discussion
Large Numbers Used before the Christian Era, p. 282
G. A. Miller
Soybean Cheese, pp. 282-283
Frederick V. Coville
Manganese Toxicity in Tobacco, pp. 283-284
H. G. M. Jacobson; T. R. Swanback
Evidences of Aquatic Life from the Glenwood Stage of Lake Chicago, p. 284
John R. Ball; William E. Powers
The Capture of Young Whitefish in the Bay of Quinte, p. 284
J. L. Hart


Scientific Books
----------------, pp. 284-285
Comparative Neurology, a Manual and Text for the Study of the Nervous System of Vertebrates
James W. Papez
Review author[s]: O. Larsell


Reports
The Committee on Awards for the Scientific Exhibit of the American Medical Association, pp. 285-286


Scientific Apparatus and Laboratory Methods
A Method for Obtaining a Breeding Stock of Rats Free from Intestinal Protozoa, pp. 286-287
Herbert L. Ratcliffe


Special Articles
Accumulation of Gas in Closed Collodion Sacs Immersed in Flowing Tap Water, pp. 287-289
Stacy R. Guild
Does Regeneration Follow Complete Ovariotomy in the Albino Rat?, pp. 289-290
Florence M. Heys


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 70, No. 1811, Sep. 13, 1929
Next Issue: New Series, Vol. 70, No. 1813, Sep. 27, 1929



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