DARWINIAN A: 



ESSAYS AND REVIEWS PERTAINING 

 TO DARWINISM. 



BY 



ASA GRAY, 



FISHER PBOFE8SOB OP NATURAL HISTORY (BOTANY) IN 

 HARVARD UNIVERSITY. 



NEW YORK: 

 APPLETON AND COMPANY, 



549 & 551 BROADWAY. 

 187G. 



