1 86 SOME AMERICAN MEDICAL BOTANISTS 



Though his writings — some 140 papers — if 

 collected, would form a respectable two vol- 

 umes, they are scattered throughout government 

 reports and society transactions, a great many 

 appearing in the Proceedings of the Davenport 

 Academy of Natural Sciences, vols, i-v; the 

 Transactions of the St. Louis Academy of Sci- 

 ence, vol. ii; and the American Naturalist, vols, 

 vi and viii. 



Not only did he give freely to societies and 

 friends, but he made for himself one of the finest 

 herbaria in the country, a collection including 

 over 18,000 determined specimens, representing 

 nearly 6,800 species, together with some 1,400 

 specimens determined only as far as the genus. 

 To bring the Mexican rose into cultivation, he 

 made an extra trip into Lower California; he 

 took much trouble to introduce the Spiraea caes- 

 pitosa, or tree moss, found in the Wasatch Moun- 

 tains. 



" His notes and journals," says Dr. C. H. Pres- 

 ton, " contain little save that which is relative 

 to his work — no mention of his travelling com- 

 panions, nor of any of the unique and interesting 

 specimens of Western humanity with whom he 

 came in contact ; yet he was deeply affectionate 

 and particularly fond of little children." 



Biography. Dr. C. H. Preston. 



