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Science, New Series, Vol. 68, No. 1758, Sep. 7, 1928


Previous Issue: New Series, Vol. 68, No. 1757, Aug. 31, 1928
Next Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928


Front Matter (4 pp.)


The British Association for the Advancement of Science
Craftsmanship and Science, pp. 213-223
William Bragg


Joseph Edward Kirkwood, pp. 223-224
J. W. Severy


Scientific Events
The Edinburgh College of Physicians Laboratory, p. 224
The Proposed International Park, pp. 224-225
The Eclipse of May 9, 1929, p. 225
A Central Station for Experiments in Mining, pp. 225-226
The International Commission on Illumination, p. 226
The Society of Chemical Industry, pp. 226-227


Scientific Notes and News, pp. 227-229
University and Educational Notes, pp. 229-230


Discussion and Correspondence
An Extinct Hot Spring Basin in Western Utah, pp. 230-231
Murray O. Hayes; Harry N. Eaton
The Effect of Ethylene upon the Vitamin B Content of Celery, p. 231
M. F. Babb
Tuberization of Potatoes Increased by X-Rays, p. 231
Edna Louise Johnson
The Alum Question, pp. 231-232
Henry Leffmann


Quotations
Millionth Maps, p. 232


Scientific Apparatus and Laboratory Methods
A Method of Projection of Low Power Images, pp. 232-233
Stephen R. Williams
A Practical Density Demonstration, p. 233
Ralph E. Dunbar


Special Articles
The Maturation and Somatic Divisions in Hybrids, Variables and So-Called Mutants, pp. 233-235
E. C. Jeffrey
High and Low Frequency Measurements with Laminaria, p. 235
L. R. Blinks
The Absolute Zero of Internal Energy and Entropy, and the Corresponding Inertness of Matter, pp. 235-236
R. D. Kleeman


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 68, No. 1757, Aug. 31, 1928
Next Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928



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