ON 



GERMINAL SELECTION 



AS A 



SOURCE OF DEFINITE VARIATION 



BY 



AUGUST WEISMANN 



TRANSLATED FROM THE GERMAN BY 

 THOMAS J. MCCORMACK 



SECOND EDITION 



CHICAGO 



THE OPEN COURT PUBLISHING COMPANY 



LONDON AGENTS: 



KEGAN PAUL, TRENCH, TRUBNER & Co., LTD. 



1902 



