Nov. 1, 1804, they went into winter quarters. April 8, 1805, Lewis resumed his journey to the westward, sending the report of his wanderings to Washington. This report told only of a vast region inhabited by Indian tribes and disturbed by the restless and murderous Sioux; but it served to prove the immensity of the new world which Jefferson's government had given to the American people. Other explorations had been begun along the line of the Red and Washita rivers. In such contributions to human knowledge Jefferson took keen interest, for he had no greater delight than in science and in whatever tended to widen the field of knowledge.
These explorations of the territory beyond the Mississippi had little immediate bearing on the interests of commerce or agriculture; but the government was actively engaged in measures of direct value. July 4, 1805, William Henry Harrison, Governor of the Indiana Territory, closed a bargain with the Wyandots, Ottawas, and other Indian tribes, by which the Indian title over another part of Ohio was extinguished. The Indians thenceforward held within the State of Ohio only the country west of Sandusky and north of the old line fixed by the treaty of Greenville. Within the year the Piankeshaw tribe sold for a small annuity a tract of land in southern Indiana, along the Ohio River, which made the United States government master of the whole north bank of the Ohio to its mouth. These concessions, of the utmost value, were obtained at a trifling cost." The average price