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Science, New Series, Vol. 68, No. 1773, Dec. 21, 1928


Previous Issue: New Series, Vol. 68, No. 1772, Dec. 14, 1928
Next Issue: New Series, Vol. 68, No. 1774, Dec. 28, 1928


Front Matter (4 pp.)
Twenty-Five Years of Biochemistry, pp. 603-608
Hans Pringsheim

The Thirteenth International Physiological Congress, pp. 608-610
Thomas Chrowder Chamberlin--Teacher, Administrator, Geologist, Philosopher, pp. 610-612
H. L. Fairchild


Scientific Events
The Fifth International Botanical Congress, Cambridge, 1930, pp. 612-613
The Gorgas Memorial Institute of Tropical and Preventive Medicine, p. 613
The Biological Laboratory at Cold Spring Harbor, pp. 613-614
The American Nature Study Society, p. 614
Bertha Chapman Cady
The New York Meeting of the American Association, pp. 614-615


Scientific Notes and News, pp. 615-618
University and Educational Notes, pp. 618-619


Discussion and Correspondence
The Meaning of Vitamin A, pp. 619-620
Henry C. Sherman
The Sieve of Eratosthenes, p. 620
Florian Cajori
The Probable Usefulness of Blood-Grouping Tests in Establishing Non-Paternity, p. 620
Sanford B. Hooker; William C. Boyd
Pressure Phenomena in the Dividing Cell, pp. 620-621
Wm. Firth Wells
Hairy Mammoth Skeleton in Utah, p. 621
Geo. H. Hansen


Quotations
International Congresses, pp. 621-623


Scientific Books
----------------, p. 623
Destructive and Useful Insects; Their Habits and Control
C. L. Metcalf
Review author[s]: L. O. Howard


Reports
The Smithsonian Institution, pp. 624-625


Special Articles
The Shape of Cork Cells: A Simple Demonstration that They are Tetrakaidecahedral, pp. 625-626
Frederic T. Lewis


The National Academy of Sciences. II, pp. 626-628
Science News, pp. xiv+xvi+xviii

Previous Issue: New Series, Vol. 68, No. 1772, Dec. 14, 1928
Next Issue: New Series, Vol. 68, No. 1774, Dec. 28, 1928



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