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Science, New Series, Vol. 68, No. 1760, Sep. 21, 1928


Previous Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928
Next Issue: New Series, Vol. 68, No. 1761, Sep. 28, 1928


Front Matter (3 pp.)


The British Association for the Advancement of Science
The Relation of Physiology to Other Sciences, pp. 259-264
Charles Arthur Lovatt Evans


Geological and Archeological Records of the Yucatan Peninsula, pp. 264-265
L. G. Huntley

Lancetilla Experiment Station, pp. 265-266
Paul C. Standley


Scientific Events
Summer Work of the Geological Survey, pp. 266-267
The International Union of Pure and Applied Chemistry, p. 267
The Martin Maloney Memorial Clinic of the Medical School of the University of Pennsylvania, pp. 267-268
Lowell Institute Lectures, pp. 268-269


Scientific Notes and News, pp. 269-272
University and Educational Notes, p. 272


Discussion
The Discovery of Living Micro-Organisms in Ancient Rocks, pp. 272-273
Chas. B. Lipman
Note on the Radial Magnetic Gradient of the Sun, p. 273
Ross Gunn
The So-Called Sieve of Eratosthenes, pp. 273-274
G. A. Miller
Ectogony or Metaxenia?, p. 274
John H. Schaffner


Reports
Committee of the American Institute of Electrical Engineers, pp. 274-275
F. L. Hutchinson


Scientific Apparatus and Laboratory Methods
An Apparatus for Washing Histological Materials, p. 276
J. B. Parker


Special Articles
Diagrams Relative to Hamilton's Canonical Equations, pp. 276-277
Carl Barus
The Germ Cell Cycle of the Digenetic Trematodes, pp. 277-278
F. G. Brooks


Science News, pp. x+xii

Previous Issue: New Series, Vol. 68, No. 1759, Sep. 14, 1928
Next Issue: New Series, Vol. 68, No. 1761, Sep. 28, 1928



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