Leaving the falls, Carver proceeded up the Mississippi to the mouth of the St. Francis, the farthest of Hennepin in 1680, discovering on the way Rum and Goose Rivers. Warned by the severity of the cold that winter was fast coming on, Carver returned to his canoe at the mouth of the Minnesota River and decided to explore that stream, of which only the lower portion had ever been visited--by Le Sueur in 1700. Following the Minnesota about two hundred miles he reached, on December 7th, the winter camp of a large tribe of Indians, about one thousand in number, who were designated by Carver as the Naudowessie (Santees). Advancing boldly, with his calumet of peace fastened to the prow of his canoe, he was received in a friendly manner. After the usual smoking of the pipe of peace, during which he says the tent was nearly broken down by the crowd of savages, who, as a rule, had never seen a white man, he was treated with great respect. Among these Indians Carver passed the winter, filling in his five months' stay by hunting and other Indian amusements. From the Indians he learned that the St. Lawrence, the Mississippi, and the Bourbon (the Red River of the North) had their sources within thirty miles of each other. This led to the natural but erroneous opinion that Carver had reached the highest land of North America, when in reality he was at an elevation of only twelve hundred feet. Carver also spoke of "the Oregon, or the River of the West," as having its sources somewhat farther to the west. This is the first time that the word Oregon appears in literature, and Carver gives no account of its meaning. [Illustration: A Calumet. (From Carver's Book.)] The Indians had traditions as to the extreme plentifulness of gold to the west of the "Shining Mountains," of which our explorer says, on the strength of Indian reports: "The mountains that lie to the west of St. Peter are called the Shining Mountains, from an infinite number of crystal stones of an amazing size with which they are covered and which, when the sun shines full upon them, sparkle so as to be seen at a very great distance." Carver's enthusiasm and interest in the West led him to make the following striking prediction, which time has fully justified. He says: