Bot 



PRACTICAL BOTANY 



BY 



JOSEPH Y. BERGEN, A.M. 



AUTHOR OF "ELEMENTS OF BOTANY," "FOUNDATIONS OF BOTANY' 

 "PRIMER OF DARWINISM," ETC. 



OTIS W. CALDWELL, PH.D. 



AUTHOR OF "PLANT MORPHOLOGY" AND "LABORATORY MANUAL OF BOTANY 



ASSOCIATE PROFESSOR OF BOTANY IN THE SCHOOL OF EDUCATION 



UNIVERSITY OF CHICAGO 



GINN AND COMPANY 



BOSTON NEW YORK CHICAGO LONDON 

 ATLANTA - DALLAS COLUMBUS SAN FRANCISCO 



