PLANT FinsiOLOG\' 



AND 



ECOLOGY 



E7 



FREDERIC EDWARD CLEMENTS, Ph.D. 



Profesimr of Bf/tany in the Univenity of Minwjioia 



WITH 125 ILLUSTRATIONS 



^t Vu? 



J 



11 



NEW YORK 



HENRY HOLT AND CO>rRA NY 

 190; 



MICROFILMED BY 

 L'NIVERSITY OF TORONTO 



LIBRARY 

 MASTER NEGATIVE NO.: 

 ^00/6 



