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Science, New Series, Vol. 69, No. 1794, May 17, 1929


Previous Issue: New Series, Vol. 69, No. 1793, May 10, 1929
Next Issue: New Series, Vol. 69, No. 1795, May 24, 1929


Front Matter (4 pp.)
Some Physical Problems in the Field of Medicine, pp. 505-509
Horatio B. Williams

The Mechanism of Spark Discharge in Air at Atmospheric Pressure, pp. 509-512
Leonard B. Loeb

Research at Mellon Institute during 1928-29, pp. 512-513
Lawrence W. Bass


Scientific Events
The Italian Academy, p. 513
Explorations in Alaska, pp. 513-514
The New Policies of the Indian Bureau, p. 514
A Homeopathic Medical Center, pp. 514-515
Professional Salaries, p. 515


Scientific Notes and News, pp. 515-519
University and Educational Notes, pp. 519-520


Discussion
Ambitious Agronomy, pp. 520-521
K. F. Kellerman
The European Starling in Illinois, pp. 521-522
Frank Collins Baker
Dispersed Stages of the Stigma in Euglena, p. 522
R. P. Hall; T. L. Jahn
Vibrations and Particles, p. 523
W. H. Pickering


Quotations
The Centenary of the London Zoological Garden, pp. 523-524


Scientific Apparatus and Laboratory Methods
An Apparatus for the Study of Matforming Fungi in Culture Solutions, pp. 524-525
Raimund H. Marloth


Special Articles
Strains of the Dog Hookworm, Ancylostoma Caninum, Specific to the Dog and to the Cat, p. 526
J. Allen Scott
Hetero-Fertilization in Maize, pp. 526-527
George F. Sprague


The National Academy of Sciences. II, pp. 527-530
Science News, pp. x+xii+xiv

Previous Issue: New Series, Vol. 69, No. 1793, May 10, 1929
Next Issue: New Series, Vol. 69, No. 1795, May 24, 1929



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