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Science, New Series, Vol. 97, No. 2528, Jun. 11, 1943


Previous Issue: New Series, Vol. 97, No. 2527, Jun. 4, 1943
Next Issue: New Series, Vol. 97, No. 2529, Jun. 18, 1943


Front Matter (4 pp.)
Where Angels Fear to Tread: A Contribution from General Sociology to Human Ethics, pp. 517-525
W. C. Allee


Obituary
Recent Deaths, p. 526


Scientific Events
Avalanche Research in Switzerland, pp. 526-527
The Tropical Plant Research Foundation, p. 527
William Crocker
The Industrial Research Institute, pp. 527-528
The Mobilization of Science, p. 528
Willard Berry; B. C. Burgess; H. F. Prytherch; B. W. Wells
Abbott Laboratories Fellowships, p. 528
Grant to the University of Michigan from the National Foundation for Infantile Paralysis, pp. 528-529
Honorary Doctorates Conferred by Columbia University, p. 529


Scientific Notes and News, pp. 529-532


Discussion
Science and War, pp. 532-533
Waldemar Kaempffert
Area Figures for United States and Great Lakes States, pp. 533-534
Chase S. Osborn; Stellanova Osborn
Misuse of the Terms ``Class Distinction'' and ``Democracy'', p. 534
Frank C. Whitmore
The Discovery of ``Stars''--A Present Problem, pp. 534-535
Eugene C. Bingham


Scientific Books
Virus Diseases, pp. 535-536
Virus Diseases
Members of the Rockefeller Institute for Medical Research; Thomas M. Rivers; W. M. Stanley; L. O. Kunkel; R. E. Shope; F. L. Horsfall; Peyton Rous
Review author[s]: Thomas Francis
Stellar Spectra, pp. 536-537
An Atlas of Stellar Spectra with an Outline of Spectral Classification
W. W. Morgan; Philip C. Keenan; Edith Kellman
Review author[s]: Dorrit Hoffleit


Special Articles
Observations on the Nature and Properties of the Fluorescent Factor F2, pp. 537-538
Victor A. Najjar; Dwight B. McNair Scott; L. Emmett Holt
The Probable Identity of Najjar and Holt's Fluorescent Substance, F2, pp. 538-539
Jesse W. Huff; William A. Perlzweig


Scientific Apparatus and Laboratory Methods
Polyvinyl Alcohol: A Medium for Mounting and Clearing Biological Specimens, pp. 539-540
Wilbur G. Downs


Science News, pp. 10-12

Previous Issue: New Series, Vol. 97, No. 2527, Jun. 4, 1943
Next Issue: New Series, Vol. 97, No. 2529, Jun. 18, 1943



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