GRAY'S BOTANICAL TEXT-BOOK. 



(SIXTH EDITION.) 



Vol. II. 



PHYSIOLOGICAL BOTANY. 



I. 



OUTLINES OF THE HISTOLOGY OF 

 PH^NOQ-AMOUS PLANTS. 



. II. 

 VEGETABLE PHYSIOLOGY. 



BY 

 GEORGE LINCOLN GOOD ALB, A. M., M. D., 



PROFE980I! OF BOTANY IN HARVAKD UNIVERSITY. 



NEW YORK ■ : • CINCINNATI • : • CHICAGO 



AMERICAN BOOK COMPANY 



