EXPERIMENTS WITH 

 PLANTS 



W-.^jF V.ioSTERHOUT, Ph.D. 



ASSISTANT PROFESSOR OF BOTANY IN HARVARD rXIVERSITY 



EIGHTH EDITIOy 



Nehi fork 

 THE MACMILLAN COMPANY 



LONDON: MACMILLAN & CO., Ltd. 



1917 

 yiil rights reserved 



