To investigate this question, P. Marquette, a Jesuit, and Joliet, were appointed by M. Talon, the Intendant of New France. Marquette was well acquainted with the Canadas, and had great influence with the Indian tribes. They conducted an expedition through the lakes, up Green bay and Fox river, to the Portage, where it approaches the Wisconsin, to which they passed, and descended that river to the Mississippi, which they reached the 17th of June, 1673. They found a river much larger and deeper than it had been represented by the Indians. Their regular journal was lost on their return to Canada; but from the account, afterwards given by Joliet, they found the natives friendly, and that a tradition existed amongst them of the residence of a "Mon-e-to," or spirit, near the mouth of the Missouri, which they could not pass. They turned their course up the Illinois, and were highly delighted with the placid stream, and the woodlands and prairies through which it flowed. They were hospitably received and kindly treated by the Illinois, a numerous nation of Indians who were destitute of the cruelty of savages. The word "Illinois," or "Illini," is said by Hennepin, to signify a "_full grown man_." This nation appears to have originally possessed the Illinois country, and also a portion west of the Mississippi. The nation was made up of eight tribes:--the Miamies, Michigamies, Mascotins, Kaskaskias, Kahokias, Peorias, Piankeshaws, and Tau-mar-waus. Marquette continued among these Indians with a view to christianize them; but Joliet returned to Canada and reported the discoveries he had made. Several years elapsed before any one attempted to follow up the discoveries of Marquette and Joliet. M. de La Salle, a native of Normandy, but who had resided many years in Canada, was the first to extend these early discoveries. He was a man of intelligence, talents, enterprise, and perseverance. After obtaining the sanction of the king of France, he set out on his projected expedition, in 1678, from Frontenac, with Chevalier Tonti, his lieutenant, and Father Hennepin, a Jesuit missionary, and thirty or forty men.