THE BOTANISTS OF PHILADELPHIA. 323 



edge by close application. He left the farm and became a 

 clerk in a bank at Byberry. In 1875 he became Cashier of 

 the National State Bank of Camden. Later, when the 

 Camclen National Bank was established, the cashiership 

 was confided to him. He was for some years Treasurer of 

 the Academy of Natural Sciences of Philadelphia, a position 

 in which his financial ability made him eminently useful. 



The study of botany was to him a welcome relaxation. 

 He acquainted himself with the plants in the vicinity of 

 Byberry, and in a short trip to Europe his eyes were 

 delighted by the mountain flora of Switzerland. After his 

 removal to Camden, close proximity to the rich and peculiar 

 flora of the " Jersey Pines " opened to him a new field, in 

 the study of which . he profited by the companionship and 

 accurate local knowledge of the lamented Charles F. 

 Parker. With most assiduous effort, most untiring industry, 

 and with a large outlay of money, he increased and per- 

 fected his herbarium, which had few, if any rivals, among 

 the private collections in the land. 



He published in the American Naturalist (November, 

 1879), a list of plants collected on an excursion with some 

 members of the American Association for the Advancement 

 of Science, to the vicinity of Pike's Peak in 1878. In 1880 

 he read before the West New Jersey Surveyor's Association 

 a paper entitled "Notes Upon the Bartram Oak " (Quercus 

 heterophylla), with a summary of the literature. 



There appeared in the Proceedings of the Philadelphia 

 Academy of Natural Sciences, for 1880, a short paper on 

 "Sexual Variations in Castanea Americana," Mr. Martiii- 

 dale had time to prepare a " list of the marine alga?, hitherto 

 observed on the coasts of New Jersey and Staten Island,' 1 



t/ t 



