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Science, New Series, Vol. 107, No. 2791, Jun. 25, 1948


Previous Issue: New Series, Vol. 107, No. 2790, Jun. 18, 1948
Next Issue: New Series, Vol. 108, No. 2792, Jul. 2, 1948


Front Matter (2 pp.)
Science and Security, pp. 659-665
E. U. Condon

Recent Discoveries in the Egyptian Faiyum and Sinai, pp. 666-670
Wendell Phillips


Obituary
Fred Conrad Koch: 1876-1948, pp. 671-672
Martin E. Hanke


American Association for the Advancement of Science: The Centennial Celebration--Washington, D. C. September 13-17, 1948, pp. 673-675
News and Notes, pp. 675-678


Technical Papers
Confirmatory Analysis of the ''Lost'' Italian Varnish, p. 679
Joseph Michelman
An Experimental and Theoretical Approach to the Mechanism of Cocaine Action, pp. 679-681
A. M. Shanes
Loss of Radioactivity from Barium Carbonate Samples, pp. 681-683
Peter E. Yankwich


In the Laboratory
A Piston Recorder for Small Volume Changes, pp. 683-684
Foster N. Martin
Radiation from a Flask Containing Various Amounts of Radioactive Phosphorus, p. 684
Russell F. Cowing; Egilda DeA Micis

Previous Issue: New Series, Vol. 107, No. 2790, Jun. 18, 1948
Next Issue: New Series, Vol. 108, No. 2792, Jul. 2, 1948



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