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 numbering thirty-two, and with their means of navigation increased to eight boats and canoes, once more embarked on the Missouri. To aid in intercourse with the Shoshone or Snake Indians of Montana, Idaho, and Oregon, two interpreters were secured, namely, George Drewyer and Toussaint Chabornæan, the latter of whom was accompanied by his wife, a young Snake woman who had been taken prisoner by his tribe some time before.

YELLOWSTONE LAKE.

On the 13th April the mouth of the Little Missouri was passed, and on the 26th that of the rapid Yellowstone River, from Sublette's Lake in the Rocky Mountains. From this great landmark the course of the Missouri—and, as a result, of the explorers—was due west, and the character, alike of the scenery, the fauna, and the flora, changed perceptibly. In the journals from which our narrative is culled, we find notes on the strange appearance presented by banks and sandbars covered with salt, looking like frost; on the