Vol. LXXV. No. 1. JULY, 1909 



THE 



POPULAR SCIENCE 

 MONTHLY 



EDITED BY J. McKEEN CATTELL 



CONTENTS 



Natural Besistance to Infectious Diseases and Its Eeinforcement. Db. 



Simon Flexner 5 



Some Practical Aspects of Gyrostatic Action. Professor W. S. Franklin 20 



Josiah "Willard Gibbs and His Relation to Modern Science. Fielding 

 H. Garrison 41 



A Revolution in Dentistry. . Dr. Richabd Cole Newton 49 



The Origin of the Nervous System and its Appropriation of Effectors. 



Professor G. H. Parker 56 



The Preparation for the Study of Medicine. Db. Frederic T. Lewis . 65 

 Darwinism in the Theory of Social Evolution. Professor Franklin H. 



Giddings 75 



Darwin's Influence upon Philosophy. Professor John Dewey .... 90 



The Progress of Science : 



The College and the Student ; The New Buildings of the University 

 of Pittsburgh ; The Percy Sladen Memorial Fund ; Scientific Items 99 



THE SCIENCE PRESS 



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Copyright, 1908, by THE SCIENCE PRESS 



