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Science, New Series, Vol. 74, No. 1919, Oct. 9, 1931


Previous Issue: New Series, Vol. 74, No. 1918, Oct. 2, 1931
Next Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931


Front Matter (6 pp.)


The British Association for the Advancement of Science
A Hundred Years of Evolution, pp. 345-360
E. B. Poulton


Scientific Events
The International Geological Expedition, p. 360
Industrial Research in the Nation's Industries, p. 361
The New Engineering Building at the University of Wisconsin, pp. 361-362
The Canal Zone Experiment Gardens, p. 362
The National Arboretum, p. 362


Scientific Notes and News, pp. 363-366


Discussion
A New Mathematical Review, pp. 366-367
G. A. Miller
On the Improvement of the Dictionary, pp. 367-368
Nelson W. Taylor
Terraces in the Connecticut Valley, pp. 368-369
Richard Foster Flint


Scientific Apparatus and Laboratory Methods
A Modification of the Osbornemendel Salt Mixture, p. 369
Philip B. Hawk; Bernard L. Oser
A Stain for Fibrin, Gram Positive Bacteria and Basal Bodies in Tissues, pp. 369-370
Helene Mynchenberg Wallace


Special Articles
An Ovo-Testis in the Yellow Perch (Perca flavescens), pp. 370-371
C. L. Turner
The Cultivation of Vaccine and Other Viruses in the Chorio-Allantoic Membrane of Chick Embryos, pp. 371-372
E. W. Goodpasture; Alice M. Woodruff; G. J. Buddingh


Books Received, p. 372
Science News, pp. 10a+12a+14a

Previous Issue: New Series, Vol. 74, No. 1918, Oct. 2, 1931
Next Issue: New Series, Vol. 74, No. 1920, Oct. 16, 1931



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