AMERICAN SCIENCE SERIES 



BOTANY 



HIGH SCHOOLS AND COLLEGES. 



BY 



CHAELBS E. BESSEY, M.Sc., PH.D., 



I'ROKESSOK OP BOTANY IN THK IOWA AGRICULTURAL COLLEGE AND LATE 

 LECTURER IN THE UNIVERSITY OF CALIFORNIA. 



THIRD EDITION REVISED. 



NEW YORK 

 HENRY HOLT AND COMPANY 



1883 



