THE BOTANISTS OF PHILADELPHIA. 411 



PENNINGTON, DR. MARY ENGLE. A careful chemico-ph} T si- 

 ological worker, late Fellow in Botany, University 

 of Pennsylvania, and author of a valuable paper in 

 the Botanical Contributions of the University of Penn- 

 sylvania, 1 : 203, entitled, " A Chemieo-Physiological 

 Study of Spirogyra nitida." 



PENNOCK, EDWARD. Dealer in botanical and medical sup- 

 plies, Philadelphia. 



PETERS, REV. JOHN E. A botanist and collector of con- 

 siderable insight, located as pastor successively at 

 May's Landing, Pleasantville and Camdeii, N. J. 



PORTER, DR. HOB ART C. Graduate of Princeton in 1881 ; 

 received the degree of B. L. from the University of 

 Pennsylvania in 188-4, and Ph. D. from the Univer- 

 sity of Rostock, Germany in 1894; Instructor in 

 Botany, University of Pennsylvania, and translator 

 of " A Text-Book of Botany," by Strasburger, Noll, 

 Scheiick, and Schimper, 1898. Dr. Porter has special- 

 ized on the algae and the vascular cryptogams, hav- 

 ing, as Lecturer in the Department of Philosophy 

 and Department for Teachers, given extended labora- 

 tory courses on the same. 



POTTS, CHARLES. 



PRICE, FERRIS W. Swarthmore College, Pa. 



PUGH, EVAN.* Mentioned as a collector of plants in the 

 " Flora Cestrica." 



PUTNAM, Miss BESSIE L. Harmonsburg, Pa. 



PYLE, Miss GHERETIEN G. Wilmington, Del. 



RAND, THEODORE. 



RAU, EUGENE A., of Bethlehem, Pa. A student of mosses 

 and fungi. 



* Deceased. 



