"A lo a c i A gaooig. 



%ihxïiï]2 of i\n £titsaim 



OP 



COMPARATIVE ZOÔLOGY, 



AT HARVARD COLLEGE, CAÎIBRIICE, MASS. 

 jjounîicïi bv prîbatc siibscrfptfon, in 1861. 



Depositedby ALEX. AGASSIZ. 

 No. 



