The principal spring, which the Indians have formed into a bath by stopping the run with stone and pebbles, is about the same temperature as the warmest bath used at the hot springs in Virginia.

On trying, Captain Lewis could with difficulty remain in it nineteen minutes, and then was affected with a profuse perspiration.

The two other springs are much hotter, the temperature being equal to that of the warmest of the hot springs in Virginia.

Our men, as well as the Indians, amused themselves with going into the bath; the latter, according to their universal custom, going first into the hot bath, where they remain as long as they can bear the heat, then plunging into the creek, which is now of an icy coldness, and repeating this operation several times, but always ending with the warm bath." Traveller's-rest Creek, it will be recollected, is on the summit of the Bitter Root Mountains, and the expedition had consequently passed from Idaho into Montana, as these States now exist on the map; but they were still on the Pacific side of the Great Divide, or the backbone of the continent.

Much game was seen in this region, and after reaching Traveller's-rest Creek, the hunters killed six deer; great numbers of elk and bighorn were also seen in this vicinity.