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Science, New Series, Vol. 70, No. 1825, Dec. 20, 1929


Previous Issue: New Series, Vol. 70, No. 1824, Dec. 13, 1929
Next Issue: New Series, Vol. 70, No. 1826, Dec. 27, 1929


Front Matter (5 pp.)
Zones of Weakness in the Earth's Crust, pp. 589-592
William Bowie

Periodicals for Mathematicians, pp. 592-594
Edward S. Allen


The American Association for the Advancement of Science
General Lectures for the Des Moines Meeting, pp. 594-595
Burton E. Livingston
Notices and Reports for 1929, Including Preparations for the Des Moines Meeting, pp. 595-596
Burton E. Livingston


Obituary
Harry Taylor Marshall, pp. 596-597
H. E. Jordan
Louis Capitan, pp. 598-599
N. C. Nelson
Alexander Vasilievitch Vasiliev, pp. 599-600
Alfred Korzybski
Recent Deaths, p. 600
Memorials, p. 600


Scientific Events
Astronomy in South Africa, p. 600
Organization of Virginia Ornithologists, p. 601
The Nobel Prizes, p. 601
The First International Congress on Mental Hygiene, pp. 601-602


Scientific Notes and News, pp. 602-605
University and Educational Notes, p. 606


Discussion
M Mu Versus Mu Mu, pp. 606-608
H. S. Uhler
Mathematics and the Truth, pp. 608-609
G. A. Miller
The Devono-Mississippian Boundary in the Southeastern United States, p. 609
J. H. Swartz
Porto Rican and Dominican Stratigraphy, p. 609
Carlotta J. Maury
``Feed a Cold and Starve a Fever'', p. 610
W. J. Humphreys


Quotations
Biochemistry and Medicine, p. 610


Scientific Apparatus and Laboratory Methods
An Issue Raised in ``a New Type of Lysimeter at the New Jersey Agricultural Experiment Station'', pp. 611-612
C. A. Mooers; W. H. MacIntire


Special Articles
Transmission of Experimental Trachoma by Contact, pp. 612-613
Joseph R. Tyler
The Life History of the Swine Kidney Worm, pp. 613-614
Benjamin Schwartz; E. W. Price
Transmission Studies with the New Psyllid-Yellows Disease of Solanaceous Plants, p. 615
A. M. Binkley


The National Academy of Sciences. III, pp. 615-618
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 70, No. 1824, Dec. 13, 1929
Next Issue: New Series, Vol. 70, No. 1826, Dec. 27, 1929



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