PHARMACEUTICAL 

 BOTANY 



A TEXT-BOOK FOR STUDENTS OF 

 PHARMACY AND SCIENCE 



BY 

 HEBER. W. YOUNGKEN, A.M., M.S., PH.M., PH.D. 



PROFESSOR OF BOTANY AND PHARMACOGNOSY AND DIRECTOR OF THE MICROSCOPICAL 

 LABORATORIES IN THE PHILADELPHIA COLLEGE OF PHARMACY AND SCIENCE 



THIRD EDITION, REVISED AND ENLARGED 



WITH 238 ILLUSTRATIONS 

 AND GLOSSARY OF BOTANICAL TERMS 



PHILADELPHIA 



P. BLAKISTON'S SON & CO. 



1012 WALNUT STREET 



