effervesses

Updated: May 2, 2025

The wind blue very hard the forepart of last night but abated toward morning; it again arose in the after part of this day and retarded our progress very much. the high lands are broken, the hills higher and approach nearer the river, tho the soil of both hills and bottoms appear equally as furtile as below; it consists of a black looking tome with a moderate portion of sand; the hills and bluffs to the debth of 20 or thirty feet, seemed to be composed entirely of this loam; when thrown in the water it desolves as readily as loaf sugar and effervesses like marle. great appearance of quarts and mineral salts, the latter appears both on the hills and bottoms, in the bottoms of the gullies which make down from the hills it lies incrusting the earth to the debth of 2 or 3 inches, and may with a fether be swept up and collected in large quantities, I preserved several specimines of this salts. the quarts appears most commonly in the faces of the bluffs. no coal, burnt hills, or pumice stone. saw today some high hills on the Stard. whose summits were covered with pine.

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