ZOOLOGY 



DESCRIPTIVE AND PRACTICAL 



BY 



BUEL P. COLTON, A.M. 



AUTHOR OF "PHYSIOLOGY, EXPERIMENTAL AND DESCRIPTIVE," "PHYSIOLOGY: 



ILLUSTRATED BY EXPERIMENT," "ELEMENTARY PHYSIOLOGY," 



"PRACTICAL ZOOLOGY"; AND PROFESSOR OF NATURAL 



SCIENCE IN THE ILLINOIS STATE NORMAL 



UNIVERSITY 



Part E 

 DESCRIPTIVE 



BOSTON, U.S.A. 



D. C. HEATH & CO., PUBLISHERS 

 1906 



