ORGAN IZ 

 KNOWLEDGE 



PICTURE 



EDITOR-IN-CHIEF 



M. V. O'SHEA 



DEPARTMENT OF EDUCATION, UNIVERSITY OF WISCONSIN 

 MADISON, WISCONSIN 



EDITOR 



ELLSWORTH D. FOSTER 



ASSOCIATE EDITOR NEW PRACTICAL REFERENCE LIBRARY; AUTHOR OF 

 CYCLOPEDIA OF CIVIL GOVERNMENT 



EDITOR FOR CANADA 



GEORGE H. LOCKE 



LIBRARIAN, TORONTO PUBLIC LIBRARY, TORONTO, ONTARIO 



ASSISTED BY ONE HUNDRED FIFTY DISTINGUISHED SCIENTISTS, EDUCATORS, 

 ARTISTS AND LEADERS OF THOUGHT IN THE UNITED STATES AND CANADA 



/// Ten Volumes 



Volume Ten 



\\. F. QUARRIE & COMPANY 



TORONTO CHICAGO NEW ^ 



