concommutants

The wind blew so hard this morning that we did not sent out untill 10 A.M. we employed the chord most of the day; the river becomes more rappid and is intercepted by shoals and a greater number of rocky points at the mouths of the little gulies than we experienced yesterday. the bluffs are very high steep rugged, containing considerable quantities of stone and border the river closely on both sides; once perhaps in the course of several miles there will be a few acres of tolerably level land in which two or thre impoverished cottonwood trees will be seen. great quantities of stone also lye in the river and garnish it's borders, which appears to have tumbled from the bluffs where the rains had washed away the sand and clay in which they were imbeded. the bluffs are composed of irregular tho horizontal stratas of yellow and brown or black clay, brown and yellowish white sand, of soft yellowish white sand stone and a hard dark brown free stone, also of large round kidneyformed and irregular seperate masses of a hard black Iron stone, which is imbeded in the Clay and sand. some little pine spruce and dwarf cedar on the hills. some coal or carbonated wood still makes it's appearance in these bluffs, pumicestone and birnt hills it's concommutants also are seen. the salts and quarts are seen but not in such abundance. the country more broken and barren than yesterday if possible. about midday it was very warm to this the high bluffs and narrow channel of the river no doubt contributed greatly. we passed a small untimbered Island this morning on the Lard. side of the river just above our encampment of last evening. saw a few small herds of the Bighorned anamals and two Elk only, of the last we killed one, the river is generally about 200 yds. wide, very rappid and has a perceptable fall or declination through it's whole course.

William Clark - The Journals of Lewis and Clark, 1804-1806