THE BOTANISTS OF PHILADELPHIA. 279 



articles have been written on insectivorous plants, notably 

 those on Dionsea in the Gardener's Monthly, on Darlingtonia 

 and on Drosera. He has pursued systematic botany, publish- 

 ing many species and describing several new ones. The 

 main work of Mr. Canby's life has been the accumulation of 

 a splendid herbarium of 30,000 species, now in possession of 

 the College of Pharmacy, of New York, and one of 8000 

 species, mainly from the United States, made for the Society 

 of Natural History of Delaware. 



Mr. Canby during his active life has botanized exten- 

 sively in almost all parts of the United States and Canada, 

 and has distributed very many thousands of specimens. 

 He has had the personal friendship of such botanists, as 

 Drs. Gray, Engelmann, Sargent and others, besides having 

 a very large and widespread botanical correspondence in 

 many parts of the world. 



In 1866 he again removed to Wilmington, Delaware, 

 where, as a business man, he has been engaged as Receiver 

 and President of the Delaware Western Railroad Company ; 

 President of the Wilmington Institute (Library, etc.), of the 

 House of Friendless and Destitute Children, of the Asso- 

 ciated Charities ; President of the Wilmington Savings Fund 

 Society, of the Delaware Field Club, of the Delaware Society 

 of Natural History, and a director in various financial 

 institutions. 



The large and fine herbarium of William M. 

 Canby * was purchased by the College of Pharmacy, of the 

 City of New York, and deposited in their building, on 

 Sixty-eighth Street, near the Boulevard. Mr. Canby 's early 

 fondness for botanical pursuits found a welcome opportunity 



* 1892. Torrey Botanical Bulletin, XIX : 336. 



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