THE 



BOTANISTS 



OF 



PHILADELPHIA 



AND 



THEIR WORK. 



BY 



JOHN W. HARSHBERGER, PH. D. 



INSTRUCTOR IX BOTANY, UNIVERSITY OF PENNSYLVANIA ; MEMBER OF 

 THE PENNSYLVANIA FORESTRY ASSOCIATION ; THE PHILADELPHIA 

 BOTANICAL CLUB ; THE UNIVERSITY FIELD CLUB ; THE DEL- 

 AWARE VALLEY NATURALISTS' UNION ; THE BOTANICAL 



SOCIETY OF PENNSYLVANIA ; THE BIOLOGICAL CLUB, 



AND THE SOCIETY OF BOTANICAL PHYSIOLOGISTS 



AND MORPHOLOGISTS. 



PHILADELPHIA. 

 1899. 













