La Salle had abandoned for a time his original plan of building a vessel for the navigation of the Mississippi. Bitter experience[2] had taught him the difficulty of the attempt, and he resolved to trust to his canoes alone. They embarked again, floating prosperously down between the leafless forests that flanked the tranquil river; till, on the sixth of February, they issued upon the majestic bosom of the Mississippi. Here, for the time, their progress was stopt; for the river was full of floating ice. La Salle's Indians, too, had lagged behind; but, within a week, all had arrived, the navigation was once more free, and they resumed their course. Toward evening, they saw on their right the mouth of a great river; and the clear current was invaded by the headlong torrent of the Missouri, opaque with mud. They built their camp-fires in the neighboring forests; and at daylight, embarking anew on the dark and mighty stream, drifted swiftly down toward unknown destinies. They passed a deserted town of the Tamaroas; saw, three days after, the mouth of the Ohio; and, gliding by the wastes of bordering swamp, landed on the twenty-fourth of February near the Third Chickasaw Bluffs. They encamped, and the hunters went out for game. All returned, excepting Pierre Prudhomme; and, as the others had seen fresh tracks of Indians, La Salle feared that he was killed. While some of his followers built a small stockade fort on a high bluff by the river, others ranged the woods in pursuit of the missing hunter. After six days of ceaseless and fruitless search, they met two Chickasaw Indians in the forest; and, through them, La Salle sent presents and peace-messages to that warlike people, whose villages were a few days' journey distant. Several days later, Prudhomme was found, and brought in to the camp, half-dead. He had lost his way while hunting; and, to console him for his woes, La Salle christened the newly-built fort with his name, and left him, with a few others, in charge of it.