On Sunday the 7th of April, 1805, all being ready, the party again took up its line of travel up the river. It now numbered thirty-two, the others having been sent back. The interpreters were Drewyer (Drouillard) and Chaboneau, both Frenchmen. Chaboneau took with him one of his three Amerind wives, one who had a small child. This woman Lewis and Clark hoped to utilise as an interpreter among the Snake tribe, to whom she belonged, having been taken captive by another tribe and finally sold to Chaboneau. Her name was Sacajawea, and she was of great assistance, notwithstanding the encumbrance of the child. After eight days they passed what they called Chaboneau Creek and Sunday Island. Chaboneau had once encamped on this creek. "Beyond this no white men had ever been but two Frenchmen," says the journal. One of these, Lapage, was with them, and he could not tell exactly how far he had gone, as they had lost their way. But Captain Lewis does not explain, if this were correct, how the Roche Jaune came to have its name before he reached it, a name which could have been applied only by some one who understood the conditions near its head. Yet farther on he states that this river "had been known to the French as the Roche Jaune, or as we have called it the Yellowstone." Proceeding up the Missouri they came to the "Musselshell," which is stated to have been so called by the Minitarees. The name then seems to have been a native word and has no connection with the shells of mussels! All through this region they saw large numbers of trees which had been cut down by beaver, and as they proceeded the beaver were thick everywhere. Buffalo were plentiful, and there was no dearth of fresh meat of all kinds. Sometimes they had to take sticks to drive the buffalo out of the way. There was one kind of game that was troublesome—the huge bears, both white (grizzly) and brown. If it be remembered that the guns of the party were muzzle-loaders, that the ammunition was loose powder and ball, that the firing apparatus was the old flint-lock, with priming-pan, it will be seen that it was no small hazard to face these ferocious bears. On one occasion six of the men, all good hunters, at the same moment attacked one of the huge brown bears, and though the bullets all took effect they were obliged to fly to the river, where two escaped in a canoe, while the others hid in bushes and fired repeatedly. The only effect of this was to enrage the animal still more till the four hunters were glad to leap down the steep bank twenty feet into the river, whither the bear pursued them and was within a few feet of one when a good shot from the shore hit him in the head and at last killed him. Eight balls had passed in different directions through him. [Illustration: Canyon of the Gates of the Mountains. From _The Trail of Lewis and Clark_, by O. D. Wheeler.]