2i8 PIONEERS OF SCIENCE IN AMERICA. 



series of contributions to knowledge. No complete list of his 

 papers has been published, but the number aggregates nearly 

 one hundred. 



In 1818 Say, in company with William Maclure, George 

 Ord, and Titian R. Peale, visited Georgia and Florida on a 

 collecting expedition, and in the next year Say received an 

 appointment as naturalist on Long's expedition to the Rocky 

 Mountains, with Peale as an assistant. Long's expedition left 

 Pittsburg, Pennsylvania, in May, on a steamboat built for the 

 purpose, and proceeded as far as Council Bluffs, Iowa, where 

 they spent the winter. During the next year they went to the 

 Rocky Mountains, and, returning toy another route, broke up 

 at Cape Girardeau, Missouri, in November. Say appears to 

 have been unfortunate on this expedition. At one time he 

 was in charge of a party of five, making a trip on foot, when 

 the packhorse broke loose, and they lost both horse and bag- 

 gage. Later, in charge of another party, he fell in with a 

 number of Kansas Indians, and again lost horses, baggage, 

 and camp equipments. The narrative of Long's expedition 

 was published in two octavo volumes and folio atlas (Philadel- 

 phia, 1823), and some of Say's descriptions of the animals and 

 " animal remains found in a concrete state " were given in foot- 

 notes scattered through both volumes. 



After the disruption of the party, Say, in company with one 

 or two others, went to New Orleans, and soon returned to 

 Philadelphia. His next journey was with Long's second expe- 

 dition, which explored the sources of the Mississippi River; 

 but, with the exception v of this and one or two minor trips, 

 the next few years were spent in Philadelphia. His share in 

 Long's two expeditions included, besides his own specialty, 

 various matters having little or no connection with this. He 

 was the historian of all classes of facts collected by the detach- 

 ments under his command ; in the second expedition he made 

 the whole of the botanical collection ; and, although not a 

 philologist, he obtained the vocabulary of the Killisteno lan- 

 guage. 



In 1825 Say left his native city, never to return. William 

 Maclure, who was a man of wealth and refinement, but con- 

 siderably eccentric withal, had an idea that the " community 

 system " was the true way of living, and, unlike some other 

 dreamers, he proceeded to put his plans into execution. He 



