VOLUME 1 AUGUST, 191S NUMBER 8 
I PROCEEDINGS 
I 
1 OF THE 
I 
I National Academy 
I OF Sciences 
EDITORIAL BOARD 
Arthur A. Noyes, Chairman Edwin B. Wilson, Managing Editor 
Arthur L. Day, Home Secretary George E. Hale, Foreign Secretary 
J. J. Abel Henry Crew R. G. Harrison 
W. B. Cannon C. B. Davenport W. H. Holmes 
J. McK. Cattell Simon Flexner J. F. Kemp 
E. G. CoNKLiN E. B. Frost E. H. Moore 
J. M. Coulter Moses Gomberg Charles Schuchert 
Publication Office; Williams & Wilkins Company, Baltimore 
Editorial Office: Massachusetts Institute of Technology, Boston 
Home Office of the Academy : Washington, D. C. 
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Entered as second-class matter at the Post OfSce at Baltimore, Md., under the Act of Angnst 24, 1912 
