Copyright igos By 

 The University of Chicago 



First Edition June 1905 



, Second Edition June igii 



Second Impression October 1911 



■^hird-Impression October 1913 



Third Edition September 1913 



Second Impression September 1916 



Third Impression July 1 91 g 



Composed and Printed By 



The University of Chicag^o Press 



Cliicago, IlHnois, U.S.A. 



