On the 14th May, 1804, the Americans left Wood River, which flows into the Mississippi, and embarked on the Missouri. From what Cass had said in his journal, the explorers expected to have to contend with natural dangers of a very formidable description, and also to fight their way amongst natives of gigantic stature, whose hostility to the white man was invincible. During the first days of this long canoe voyage, only to be compared to those of Orellana and Condamine on the Amazon, the Americans were fortunate enough to meet with some Sioux Indians, an old Frenchman, a Canadian _coureur des bois_, or trapper, who spoke the languages of most of the Missouri tribes, and consented to accompany the expedition as interpreter. They passed the mouths of the Osage, Kansas, Platte or Nebraska, and White River, all tributaries of the Missouri, successively, and met various parties of Osage and Sioux, or Maha Indians, who all appeared to be in a state of utter degradation. One tribe of Sioux had suffered so much from smallpox, that the male survivors, in a fit of rage and misery, had killed the women and children spared by the terrible malady, and fled from the infected neighbourhood. A little farther north dwelt the Ricaris, or Recs, at first supposed to be the cleanest, most polite, and most industrious of the tribes the expedition met with; but a few thefts soon modified that favourable judgment. It is curious that these people do not depend entirely on hunting, but cultivate corn, peas, and tobacco. This is not, however, the case with the Mandans, who are a more robust race. A custom obtains among them, also characteristic of Polynesia--they do not bury their dead, but expose them on a scaffold. Clarke's narrative gives us a few details relating to this strange tribe. The Mandans look upon the Supreme Being only as an embodiment of the power of healing. As a result they worship two gods, whom they call the Great Medicine or the Physician, and the Great Spirit. It would seem that life is so precious to them that they are impelled to worship all that can prolong it! Their origin is strange. They originally lived in a large subterranean village hollowed out under the ground on the borders of a lake. A vine, however, struck its roots so deeply in the earth as to reach their habitations, and some of them ascended to the surface by the aid of this impromptu ladder. The descriptions given by them on their return of the vast hunting-grounds, rich in game and fruit, which they had seen, led the rest of the tribe to resolve to reach so favoured a land. Half of them had gained the surface, when the vine, bending beneath the weight of a fat woman, gave way, and rendered the ascent of the rest impossible. After death the Mandans expect to return to their subterranean home, but only those who die with a clear conscience can reach it; the guilty will be flung into a lake.