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VOLUMLK XLVII. 

 1915. 



EDITED BY 



DR. E, M. WALKER, 



Biological Department, 

 UNIVERSITY OF TORONTO. TORONTO 



Editor Emeritus : REV. C. J. S. BETHUNE. 



ONTARIO AGRICULTURAL COLLEGE, GUELPH. ONT. 



ILonUon, ©nlario : 

 The Loiioii Printing: and Litliographing- Company Limited. 



1915. 



