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Science, New Series, Vol. 69, No. 1777, Jan. 18, 1929


Previous Issue: New Series, Vol. 69, No. 1776, Jan. 11, 1929
Next Issue: New Series, Vol. 69, No. 1778, Special Issue Containing General Reports of the Fifth New York Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 25, 1929


Front Matter (4 pp.)


The American Association for the Advancement of Science
The Relation of Statistics to Modern Mathematical Research, pp. 49-54
Dunham Jackson
The Increased Efficiency of American Agriculture, pp. 54-60
L. E. Call


The World's Two Greatest Petrified Forests, pp. 60-63
G. R. Wieland

Samuel Bonsall Parish, p. 63
W. L. Jepson


Scientific Events
The International Congress of Tropical Medicine, pp. 63-64
The Engineers Memorial at Louvain, p. 64
Storm Damage to the Experiment Stations in the West Indies and Florida, pp. 64-65
The Program of Research of the Corn-Borer Conference, p. 65
Program of the American Philosophical Society, pp. 65-66


Scientific Notes and News, pp. 66-69
University and Educational Notes, p. 69


Discussion and Correspondence
The Missing Link in Stellar Evolution, pp. 69-71
C. D. Perrine
Resonance Radiometry, pp. 71-72
A. H. Pfund
Hall Effect in Single Metal Crystal, p. 72
P. I. Wold
Dissociation of Neutral Vaccine Virus-Immune Serum Mixtures, p. 72
Perrin H. Long; Peter K. Olitsky
Prickly Pear Work, pp. 72-73
A. C. D. Rivett


Reports
The Influenza Epidemic, p. 73
Henry A. Christian; Theodore B. Appel; J. P. Leake; H. F. Vaughan; R. C. Williams; Haven Emerson


Scientific Apparatus and Laboratory Methods
Mounting Amphibia by Paraffin Infiltration, p. 74
Ralph G. Clausen


Special Articles
The Growth of Hookworm Larvae on Pure Cultures of Bacteria, pp. 74-75
Oliver R. McCoy
The Excitation of Luminescence by the Agitation of Mercury in Glass and Transparent Fused Silica Tubes and Vessels, pp. 75-78
W. L. Lemcke
The Inorganic Constituents of Milk, p. 78
Norman C. Wright; Jacob Papish


Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 69, No. 1776, Jan. 11, 1929
Next Issue: New Series, Vol. 69, No. 1778, Special Issue Containing General Reports of the Fifth New York Meeting of the American Association for the Advancement of Science and Associated Societies. Edited by Burton E. Livingston, Permanent Secretary, Jan. 25, 1929



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