Let us now turn for a moment to the proceedings of the French during these same years. Unlike the English, who stuck sedulously to the work of making their settlement self-supporting by agriculture, they were intent rather on trading with the Indians for fur and exploring the vast territory which lay to south and west of them. To these objects may be added the salvation of the souls of the Indian tribes; for beyond all doubt it was zeal for the conversion, or at any rate for the baptism, of these savages that led the Jesuits through endless hardship and danger into the heart of the continent. As early as 1613 Champlain had travelled up the Ottawa by way of Lake Nipissing and French River to Lake Huron, returning by Lake Simcoe and Lake Ontario. Jesuit missionaries followed the same track in 1634, and established a mission on the peninsula that juts out from the eastern shore of Lake Huron. From thence they spread to Lakes Superior and Michigan, erecting mission-houses and taking possession of vast tracts of land and water in the name of King Lewis the Fourteenth. Shortly after the restoration of King Charles the Second, Jean Talon, Intendant of Canada, formed the resolution of getting in rear of the English settlements and confining the settlers to a narrow strip of the sea-board; his plan being to secure the rivers that formed the highways of the interior, and to follow them, if they should prove to flow thither, to the Gulf of Mexico, so as to hold both British and Spaniards in check. A young adventurer, named Robert Lasalle, appeared at the right moment as a fit instrument to his hand. In 1670 Lasalle passed through the strait, still called Detroit, which leads from Lake Huron to Lake Erie, reached a branch of the Ohio and made his way for some distance down that river. Three years later a Jesuit, Joliet, striking westward from the western shore of Lake Michigan, descended the Wisconsin and followed the Mississippi to the junction of the Arkansas. In 1678 an expedition under Lasalle explored the passage from Lake Ontario to Lake Erie, and discovered the Falls of Niagara, where Lasalle, with immediate appreciation of the strategic value of the position, proceeded to build a fort. Finally, in 1680, Lasalle penetrated from the present site of Chicago on Lake Michigan to the northern branch of the River Illinois, paddled down to the Mississippi, and after five months of travel debouched into the Gulf of Mexico. He took nominal possession of all the country through which he passed; and the vast territory between the Alleghanies and the Rocky Mountains from the Rio Grande and the Gulf of Mexico to the uppermost waters of the Missouri were annexed to the French crown under the name of Louisiana.