BIBLIOTHEQEE 
This Copy has been struck off previously to the final Revision 
of the Book, for the purpose of being laid before the British 
Association, on its meeting in Dublin, 
j 
1 
Kibnirn of % pl us cum 
OF 
COMPARATIVE ZOOLOGY, 
AT HARVARD COLLEGE, CAMBRIDGE, MASS. 
jFountic'a h» initiate sutiscrfpifon, Cn isgi. 
From the Library of LOUIS AGASSIZ. 
No. 
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