AMERICAN SCIENCE SERIES, ELEMENTARY COURSE 



FIRST LESSONS 



IN 



Z OO L o aT 



ADAPTED FOB USE IN SCHOOLa 



BY 



A. S. PACKARD, M.D., Ph.D. 



Professor of Zoology and Geology in Brovm Unioersity 



FIFTH EDITION, REVISED 



NEW YORK 



HENEY HOLT AND COMPANY 



1894 



