Rocky Mountains. Z 



alluvial formations and deposits, will afford subjects of inves- 

 tigation for Mr, Jessup. In this science, as also in Botany 

 and Zoology, facts will be required without regard to the 

 theories or hypotheses that have been advanced on numer- 

 ous occasions by men of science. 



" Mr. Peale will officiate as assistant naturalist. In the se- 

 veral departments above enumerated his services will be re- 

 quired in collecting specimens suitable to be preserved, in 

 drafting and delineating them, in preserving the skins, &c. of 

 animals, and in sketching the stratifications of rocks, earths, 

 &c. a,s presented on the declivities of precipices. 



" Mr. Seymour, as painter for the .expedition, will furnish 

 sketches of landscapes, whenever we meet with any distin- 

 guished for their beauty and grandeur. He will also paint 

 miniature likenesses, or portraits if required, of distinguished 

 Indians, and exhibit groups of savages engaged in celebrat- 

 ing their festivals, or sitting in council, and in general illus- 

 trate any subject, that may be deemed appropriate in his art. 



" Lieutenant Graham and Cadet Swift, in addition to the 

 duties they may perform in the capacity of assistant Topo- 

 graphers, will attend to drilling the boat's crew, in the exer- 

 cise of the musket, the field piece, and the sabre. 



" Their duties will be assigned them, from time to time, 

 by the commanding officer, 



" All records kept on board the steam boat, all subjects of 

 Natural History, Geology, and Botany, all drawings, as also 

 journals of every kind relating to the expedition will at all 

 times be subject to the inspection of the commanding officer, 

 and at the conclusion of each trip or voyage, will be placed 

 at his disposal, as agent for the United States' government. 



" Orders will be given, from time to time, whenever the 

 commanding officer may deem them expedient. 



S. H. Long, Major U. S. Engineers., 

 CommaJiding Expedition.'' 



n 



