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Science, New Series, Vol. 84, No. 2171, Aug. 7, 1936


Previous Issue: New Series, Vol. 84, No. 2170, Jul. 31, 1936
Next Issue: New Series, Vol. 84, No. 2172, Aug. 14, 1936


Front Matter (3 pp.)


The American Association for the Advancement of Science
Theobald Smith; Investigator and Man, pp. 117-122
Simon Henry Gage
Presentation of the 250 Thousandth Bausch and Lomb Microscope to Professor Frederick G. Novy: Address of Welcome by the President of the Bausch and Lomb Optical Company, p. 122
M. H. Eisenhart
Response by the President of the American Association for the Advancement of Science, pp. 122-123
Edwin G. Conklin
Presentation of the Microscope, p. 124
Edward Bausch
Some Results of Microscopical Research Which Have Been Significant for Human Welfare, pp. 124-127
Frederick G. Novy


Obituary
Henry Sewall, pp. 127-128
H. J. Corper
Recent Deaths, p. 128


Scientific Events
The High Voltage Laboratory of the University of London, pp. 128-129
Foundation of the Smithsonian Institution, p. 129
Regional Stations of the U. S. Department of Agriculture, pp. 129-130
The Cancer Institute, p. 130
International Forestry Congresses, pp. 130-131


Scientific Notes and News, pp. 131-133


Discussion
Early Observation and Attempted Explanation of the Glacial Drift, pp. 134-135
O. D. Von Engeln
Tumors in Drosophila Melanogaster Resulting from Somatic Segregation, p. 135
Donald F. Jones
Relation of Root Pressure to Plant Disease, pp. 135-136
James Johnson
A Study of the Effect of Drought on Trees, p. 136
E. N. Munns
Remarkable Lightning Bolt, pp. 136-137
H. A. Allard


Scientific Books
Man and His Environment, p. 137
Deserts on the March
Paul B. Sears
Review author[s]: A. F. Woods
Cyrus Guernsey Pringle, pp. 137-138
Life and Work of Cyrus Guernsey Pringle
Helen Burns Davis
Review author[s]: C. A. Weatherby


Special Articles
Survival of Ascaris Eggs after Centrifuging, p. 138
H. W. Beams; R. L. King
The Semiquinone of the Flavine Dyes, Including Vitamin B2, pp. 138-139
L. Michaelis; M. P. Schubert; C. V. Smythe
Electrical Brain Waves and Temperature, pp. 139-140
Hudson Hoagland
Pyruvic Acid in Urine after Hard Exercise, pp. 140-141
R. E. Johnson; H. T. Edwards


Scientific Apparatus and Laboratory Methods
A Practical Method for Inducing Oviposition in Diurnal Lepidoptera, pp. 141-142
Ralph W. Macy
Preparation of Non-Toxic Urine Fractions for Assay of Male Hormone by the Female Bitterling Test, p. 142
Israel S. Kleiner; Abner I. Weisman; Daniel I. Mishkind
An Electrically Heated Needle for Paraffin Embedding, p. 142
A. C. Fabergé; L. La Cour


Books Received, p. 142
Science News, pp. 8a+10a+11a
Back Matter (1 p.)

Previous Issue: New Series, Vol. 84, No. 2170, Jul. 31, 1936
Next Issue: New Series, Vol. 84, No. 2172, Aug. 14, 1936



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