406 THE BOTANISTS OF PHILADELPHIA. 



BussiER, Miss K. Germantown, Philadelphia. 



Chambers, Miss Sara D. Assisted in botany at the Uni- 

 versity of Pennsylvania, Philadelphia. 



Cochrane, Professor. West Chester, Pa. 



Collins, Zaccheus.* Vice-President American Philosophi- 

 cal Society and member of the Academy of Natural 

 Sciences, where he did good work on the herbarium. 

 Born 1764, died June 12, 1831, aged 67. 



Colson, Miss Jessie. Prominently identified with the inter- 

 ests of the Woodstown Natural History Club, and a 

 trained botanist, having studied at Swarthmore Col- 

 lege and the Biological School of the University of 

 Pennsylvania, where she was Assistant for one year. 



CoNARD, Henry S. A teacher in the Westtown School and 

 Fellow in Biology, University of Pennsylvania. 

 Author of a paper on Painter's Arboretum. 



CoRREA, Abbe.* In 1815 he published, for the use of his 

 classes in Philadelphia, a reduction of the genera in 

 Muhlenberg's Catalogue, according to the natural 

 families of plants of Jussieu. This was appended 

 to the second edition of the catalogue, issued in 

 1818 by Solomon Conrad, and was probably the 

 earliest attempt in the United States to group our 

 plants by the natural method. See page 154 of this 

 book. 



Cressman, Newton F. Pelham, Germantown. 



Cressman, Philip.* 



Cross, Dr. Laura B. Student and graduate of the Depart- 

 ment of Biology, University of Pennsylvania. 



Davis, Nelson F. Lewisburg, Pa. 



* Deceased. 



