r'\ 



s-t 



44iz: 



^ibrarg oi tljc S^xtscitm 



OP 



COMPARATIVE ZOÔLOGY, 



AT MRVARD COLLEGE, CAMBRIDGE, MASS. 



jFounïic^ bjo jirfbate suijscrîçtfon, fn 1861. 



No. t^^Jf. 



