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Science, New Series, Vol. 56, No. 1447, Sep. 22, 1922


Previous Issue: New Series, Vol. 56, No. 1446, Sep. 15, 1922
Next Issue: New Series, Vol. 56, No. 1448, Sep. 29, 1922


Front Matter (1 p.)
The Department of Medicine at the Peking Union Medical College, pp. 317-320
Francis W. Peabody

A First Course in General Chemistry, pp. 320-323
Wilhelm Segerblom

The Physico-Chemical Mechanism of Mutation and Evolution, pp. 323-326
Jerome Alexander


Scientific Events
Animal Experiments in Great Britain, pp. 326-327
The Report of the Engineering Council on Work Periods, pp. 327-328
Science Section of the Association of Colleges and Preparatory Schools of the Middle States and Maryland, p. 328
Herschel Centenary Pilgrimage, pp. 328-329
The International Geological Congress, pp. 329-330
H. M. A.


Scientific Notes and News, pp. 330-334
University and Educational Notes, p. 334


Discussion and Correspondence
Tingitidæ or Tingidæ, pp. 334-335
W. J. Holland
The Glaciation of the Cordilleran Region, pp. 335-336
Thomas Large
A Suggestion to Zoogeographers, pp. 336-338
Emmett Reid Dunn
Clinkertill, a New Metamorphic Rock, p. 338
L. P. Dove
The Homing of a Dog, p. 339
W. D. Harry


Quotations
Controlling Research Endowments, pp. 339-340


Scientific Books
----------------, pp. 340-341
An Advanced Course of Instruction in Chemical Principles
Arthur A. Noyes; Miles S. Sherrill
Review author[s]: J. Livingston R. Morgan


Special Articles
Sand Drown, a Chlorosis of Tobacco and Other Plants Resulting from Magnesium Deficiency, pp. 341-342
W. W. Garner; J. E. McMurtrey; E. G. Moss
Transference of the Bean Mosaic Virus by Macrosiphum Solanifolii, pp. 342-344
Ray Nelson
The Extension of the X-Ray into the Ultraviolet Spectrum, p. 344
Otto Stuhlman

Previous Issue: New Series, Vol. 56, No. 1446, Sep. 15, 1922
Next Issue: New Series, Vol. 56, No. 1448, Sep. 29, 1922



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