jarusalem

I have observed in many parts of the plains and praries the work of an anamal of which I could never obtain a view. their work resembles that of the salamander common to the sand hills of the States of South Carolina and Georgia; and like that anamal also it never appears above the ground. the little hillocks which are thrown up by these anamals have much the appearance of ten or twelve pounds of loose earth poared out of a vessel on the surface of the plain. in the state they leave them you can discover no whole through which they throw out this earth; but by removing the loose earth gently you may discover that the soil has been broken in a circle manner for about an inch and a half in diameter, where it appears looser than the adjacent surface, and is certainly the place through which the earth has been thrown out, tho the operation is performed without leaving any visible aperture. the Bluffs of the river which we passed today were upwards of a hundred feet high, formed of a mixture of yellow clay and sand- many horizontal stratas of carbonated wood, having every appearance of pitcoal at a distance; were seen in the the face of these bluffs. these stratas are of unequal thicknesses from I to 5 feet, and appear at different elivations above the water some of them as much as eighty feet. the hills of the river are very broken and many of them have the apearance of having been on fire at some former period. considerable quantities of pumice stone and lava appear in many parts of these hills where they are broken and washed down by the rain and melting snow. when we halted for dinner the squaw busied herself in serching for the wild artichokes which the mice collect and deposit in large hoards. this operation she performed by penetrating the earth with a sharp stick about some small collections of drift wood. her labour soon proved successful, and she procurrd a good quantity of these roots. the flavor of this root resembles that of the Jerusalem Artichoke, and the stalk of the weed which produces it is also similar, tho both the root and stalk are much smaller than the Jarusalem Artichoke. the root is white and of an ovate form, from one to three inches in length and usually about the size of a man's finger. one stalk produces from two to four, and somitimes six of these roots.

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