THE BOTANISTS OF PHILADELPHIA. 393 



teachers at the Rittenhouse Academy, Philadelphia (Dr. 

 De B. K. Ludwig and Professor E. B. AYaples, Principals), 

 instructing the students in chemistry, physics and astro- 

 nomy. 



In June, 1895, he was asked to revise the botanical 

 words and terms in Worcester's Dictionary, which was 

 undergoing revision at Lippincotts. This work, besides 

 the lectures delivered before the University Archeological 

 Association on ethno-botanical subjects, and his profes- 

 sional duties at the University, have given him little spare 

 time for exhaustive original research, to which he is most 

 inclined. During the month of July, 1896, he delivered 

 before a class of teachers and others interested in botany, 

 attending the Summer School of the American Society for 

 the Extension of University Teaching, a course of lectures 

 on "The Natural History of Field and Garden Plants," as 

 also during the fall of 1896 a course on fungi in the depart- 

 ment of the University for teachers. In 1897 he was one 

 of corps of lecturers in the Department of Lectures, Uni- 

 versity of Pennsylvania. 



Dr. Harshberger is a member of the Philadelphia 

 Botanical Club, in the meetings of which he takes a deep 

 interest, having made several communications to that body, 

 notably on his observations on Talinum teretifolium of the 

 serpentine barrens of Chester County, and on the flora of 

 Luray, A T irginia, and vicinity, which he visited in 1894. 

 He is also a member of the Pennsylvania Forestry Asso- 

 ciation, the University Field Club, and of the Delaware 

 Valley Naturalists' Union, having been the Treasurer of 

 the latter association during 1895-1896, and President of 

 the Field Club at the same time. In 1898 he was elected 



