o^^x 



^ibctrg jof ilje Pitscum 



OF 



COMPARATIVE ZOOLOGY, 



AT flARYAKD COLLEGE, CAMBRIDGE, MASS. 



JJounticD I)2> pribatc subscrfptfoii, fn 1861, 



From the Library of LOUIS AGASSIZ. 



No. 0'^^ ^^' 



