They also set forth this observation: "The only animals we have observed are the elk, the bighorn, and the hare common to this country." Wayfarers across the plains now call this hare the jack-rabbit.

The river soon became very rapid with a marked descent, indicating their nearness to its mountain sources.

The journal says:-- "Its general width is about two hundred yards; the shoals are more frequent, and the rocky points at the mouths of the gullies more troublesome to pass.

Great quantities of stone lie in the river and on its bank, and seem to have fallen down as the rain washed away the clay and sand in which they were imbedded.

The water is bordered by high, rugged bluffs, composed of irregular but horizontal strata of yellow and brown or black clay, brown and yellowish-white sand, soft yellowish-white sandstone, and hard dark brown freestone; also, large round kidney-formed irregular separate masses of a hard black ironstone, imbedded in the clay and sand; some coal or carbonated wood also makes its appearance in the cliffs, as do its usual attendants, the pumice-stone and burnt earth.