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Science, New Series, Vol. 74, No. 1918, Oct. 2, 1931


Previous Issue: New Series, Vol. 74, No. 1917, Sep. 25, 1931
Next Issue: New Series, Vol. 74, No. 1919, Oct. 9, 1931


Front Matter (6 pp.)


British Association for the Advancement of Science
The Growth in Opportunities for Education and Research in Physics during the Past Fifty Years, pp. 317-324
J. J. Thomson


Post-Ehrlich Immunology, pp. 324-327
W. H. Manwaring


Obituary
David Starr Jordan, pp. 327-329
Barton Warren Evermann
Memorials, pp. 329-330
Recent Deaths, p. 330


Scientific Events
The International Illumination Congress, pp. 330-331
Committee Appointments of the American Institute of Electrical Engineers, p. 331
Wild Life in National Forests, pp. 331-332
The New Agricultural Engineering Building at the University of Kentucky, p. 332
The Publication of Newton's Correspondence, pp. 332-333


Scientific Notes and News, pp. 333-337


Discussion
The Megagametophyte of Pinus, pp. 337-338
W. H. Emig
Pauropoda in Alaska, p. 338
William A. Hilton
More about Citations, pp. 338-339
Bernard H. Lane
Vision, and Vascularity of the Eye, pp. 339-340
E. M. Josephson


Scientific Apparatus and Laboratory Methods
Absorption Devices and Methods, pp. 340-341
John W. Williams
Double Plate Method Used for Culturing Tilletia levis, p. 341
E. W. Bodine


Special Articles
Inbreeding in Alfalfa Establishes a High Degree of Homozygosity, pp. 341-343
George Stewart
Non-Acid-Fast Tubercle Bacilli, pp. 343-344
Franklin R. Miller


Books Received, p. 344
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1917, Sep. 25, 1931
Next Issue: New Series, Vol. 74, No. 1919, Oct. 9, 1931



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