THE 



BOTANISTS 



OF 



PHILADELPHIA 



AND 



THEIR WORK. 



BY 



JOHN W. HARSHBERGER, Ph. D. 



INSTRUCTOR IN 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. 



