The Spaniards had previously sought in vain for the mouth of this stream, and bestowed upon it, in anticipation, the name of Del Rio Ascondido. La Salle now returns to Quebec, by way of the Lakes, and from thence to France, where he is well received by the king, who grants him an outfit of four ships, and two hundred men, to enable him to continue his discoveries, and found a colony in the newly discovered territories. He leaves Rochelle in July, 1684, reaches the Bay of St. Louis, which is fifty leagues south of the Mississippi, in the Gulf of Mexico, in February following, where he builds a fort, founds a settlement, and is finally assassinated by one of his own party. The exertions of this enterprising individual, and the account which was published of his discoveries by the Chevalier Tonti, who had accompanied him in all his perilous expeditions, had a greater effect, in the French capital, in producing a correct estimate of the extent, productions, and importance of the Canadas, than all that had been done by preceding tourists; and this may be considered as the true era, when the eyes of politicians and divines, merchants and speculators, were first strongly turned towards the boundless forests, the sublime rivers and lakes, the populous Indian tribes, and the profitable commerce of New France. Father Louis Hennepin was a missionary of the Franciscan order of Catholics, who accompanied La Salle on his first voyage from France; and after the building of Fort Crevecoeur, on the Illinois, was dispatched in company with three French voyageurs to explore the Mississippi River. They departed from Fort Crevecoeur on the 29th of February, 1680, and dropping down the Illinois to its junction with the Mississippi, followed the latter an indeterminate distance towards the Gulf, not believed to be great, where they left some memorial of their visit, and immediately commenced their return. When they had proceeded up the Mississippi a hundred and fifty leagues above the confluence of the Illinois, they were taken prisoners by some Indian tribes, and carried towards its sources nineteen days' journey into the territories of the Naudowessies and Issati, where they were detained in captivity three or four months, and then suffered to return. The account which Hennepin published of his travels and discoveries, served to throw some new light upon the topography, and the Indian tribes of the Canadas; and modern geography is indebted to him for the names which he bestowed upon the Falls of St. Anthony and the River St. Francis. In 1703, the Baron La Hontan, an unfrocked monk, published, in London, his voyages to North America, the result of a residence of six years in the Canadas. La Hontan served as an officer in the French army, and first went out to Quebec in 1683. During the succeeding four years he was chiefly stationed at Chambly, Fort Frontenac, Niagara, St. Joseph, at the foot of Lake Huron, and the Sault de St. Marie.