

VOLUME XLIV. 

 1912. 



EDITED BY 



DR. E. M. WALKER. 



Biological Department, 

 UNIVERSITY OF TORONTO, TORONTO"^ 



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



ONTARIO AGRICULTURAL COLLEGE, GUELPH. ONT. 



Eonlion, ©nfario: 

 The London Printingf and Lithographing Company Limited- 



1912. 



