Father de Smet's letters describe in detail the scenery and incidents of the route from the eastern border of Kansas to Fort Hall, in Idaho, where the British factor received the travellers with abounding hospitality. Here some of the Flatheads were in waiting to convey the missionaries to the tribe, the chiefs of which met them in Beaver Head Valley, Montana, and testified their welcome with dignified simplicity. Passing over to the waters of the Columbia, they founded the mission of St. Mary upon the first Sunday in October, in the beautiful Bitter Root valley at the site of the later Fort Owen. Thence Father de Smet made a rapid journey in search of provisions to Fort Colville, on the upper Columbia, but was again at his mission stockade before the close of the year. In April a longer journey was projected, as far as Fort Vancouver, on the lower Columbia, where Dr. McLoughlin, the British factor, received the good priest with that cordial greeting for which he was already famous. During this journey the father narrowly escaped drowning in the turbulent rapids of the Columbia, where five of his boatmen perished. Returned to St. Mary's, the prospects for a harvest of souls both among the Flatheads and the neighboring tribes appeared so promising that the missionary determined to seek re-enforcement and further aid in Europe. Thereupon he left his companions in charge of the "new Paraguay" of his hopes, and once more undertook the long and adventurous journey to the settlements, this time by way of the Yellowstone and Missouri rivers, arriving at St. Louis the last of October, 1842. At this point the journeys detailed in the volume here reprinted come to an end. The later career of Father de Smet and his subsequent journeyings will be detailed in the preface to volumes xxviii and xxix, in the latter of which will appear his _Oregon Missions_.