BY THE SAME AUTHOR 



ELEMENTARY ZOOLOGY 



Pp. xv-f-492, 172 figs., i2mo, 1901, 



$1.20 

 FIRST LESSONS IN ZOOLOGY 



Pp. x+363, 257 figs., i2mo, 1903, 



ll.ij 

 AMERICAN INSECTS 



Pp. vii-f-67i, 812 figs., ii colored 



plates, 8vo, 1905 (American Nature 



Series, Group 1), $5.00. Students' 



edition, $4.00 



HENRY HOLT AND COMPANY 



PUBLISHERS NEW YORK 



