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Science, New Series, Vol. 53, No. 1373, Apr. 22, 1921


Previous Issue: New Series, Vol. 53, No. 1372, Apr. 15, 1921
Next Issue: New Series, Vol. 53, No. 1374, Apr. 29, 1921


Front Matter (1 p.)
Sherburne Wesley Burnham, 1838-1921, pp. 373-377
Edwin B. Frost

The Centennial Expedition of Indiana University to Peru, pp. 377-379
William Ray Allen


Scientific Events
Illinois State Parks, p. 380
Industrial Fellowships of the Mellon Institute, pp. 380-381
Appointments Committee for Russian Scientific and Literary Men, p. 381
The Visit of Madame Curie, pp. 381-382
Lectures by Professor Einstein, p. 382


Scientific Notes and News, pp. 382-386
University and Educational News, pp. 386-387


Discussion and Correspondence
Genetics of the ``Chinchilla'' Rabbit, pp. 387-388
W. E. Castle
The Early History of Litmus in Bacteriology, pp. 388-389
Ivan C. Hall
Another Drift Bottle Which Crossed the Atlantic, p. 389
James W. Mavor
Newspaper Science, p. 389
Orin Tugman


Scientific Books
----------------, pp. 389-391
Atmospheric Pollution
Review author[s]: Alexander McAdie


Special Articles
The Mechanism of an Enzyme Reaction as Exemplified by Pepsin Digestion, pp. 391-393
John H. Northrop
Knipp's Singing Tube, pp. 393-395
F. R. Watson


The American Physiological Society, pp. 395-398
Chas. W. Greene

Previous Issue: New Series, Vol. 53, No. 1372, Apr. 15, 1921
Next Issue: New Series, Vol. 53, No. 1374, Apr. 29, 1921



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