SENATE 



No. 252. 



ANNUAL EEPORT 



or THE 



TRUSTEES 



OF THE 



MUSEUM OP COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE, IN CAMBRIDGE: 



TOGETHER WITH 



THE EEPOET OF THE DIEECTOK 



FOR 



1 8 7 2. 



BOSTON: 



WRIGHT & POTTER, STATE PRINTERS, 

 19 Province Street. 



1873. 



