In the way of trade he visited Lakes Ontario and Erie. While the Canadians were yet excited about the discovery of the Mississippi, he imparted his aspirations regarding it to the Governor-general. He said that, by ascending, instead of descending, that great stream, a means might be found for reaching the Pacific Ocean; but that the outlay attending the enterprise could only be defrayed by combining with it an extended traffic with the nations of the West; that he would gladly make the attempt himself if a trading-post were erected for his use at the foot of Lake Ontario, as a basis for his operations, with an exclusive license to traffic in the Western countries. The Governor gave him the command of Fort Frontenac, to begin with. Obtaining, also, his recommendations to the Court, La Salle sailed for France in 1675, and gained all he wanted from the Marquis de Seignelai, son and successor of the great Colbert as minister of marine. The King bestowed on La Salle the seigniory of Cataraqui (Kingston) and ennobled him. This seigniory included Fort Frontenac, of which he was made the proprietor, as well as of Lake Ontario; conditioned, however, that he was to reconstruct the fort in stone. His majesty also invested him with all needful credentials for beginning and continuing his discoveries. La Salle, on his return to Canada, actively set about aggrandizing his new possession. Several colonists and some of the natives repaired to the locality, and settled under protection of his fort. He built in its vicinity three decked vessels--the first ever seen upon Lake Ontario. In 1677 he visited France again, in quest of aid to carry out his plans. Colbert and Seignelai got him a royal commission as recognized explorer of Northwest America, with permission to erect fortified posts therein at his discretion. He found a potent protector, also, in the Prince de Conti. La Salle, full of hope, sailed from La Rochelle in summer, 1678, with thirty seamen and artisans, his vessel freighted with equipments for his lake craft, and merchandise for barter with the aborigines. A brave officer, Chevalier de Tonti, went with him, proposing to share his fortunes. Arrived at Cataraqui, his energy put all his workpeople in activity. On November 18th he set sail from Fort Frontenac in one of his barks, loaded with goods and materials for constructing a second fort and a brigantine at Niagara. When he reached the head of Lake Ontario, his vessel excited the admiration of the savages; while the Falls of Niagara no less raised the wonder of the French. Neither had before seen the former so great a triumph of human art; nor the latter, so overpowering a spectacle of nature.