This intelligence was disagreeable and embarrassing. From the falls to the Chopunnish nation, the plains afford no deer, elk, or antelope, on which we can rely for subsistence. The horses are very poor at this season; and the dogs must be in the same condition, if their food, the fish, have failed. On the other hand, it is obviously inexpedient to wait for the return of the salmon, since, in that case, we may not reach the Missouri before the ice will prevent our navigating it. We therefore decided to remain here only till we collect meat enough to last us till we reach the Chopunnish nation, with whom we left our horses on our downward journey, trusting that we shall find the animals safe, and have them faithfully returned to us; for, without them, the passage of the mountains will be almost impracticable. April 2, 1806.--Several canoes arrived to visit us; and among the party were two young men who belonged to a nation, which, they said, resides at the falls of a large river which empties itself into the south side of the Columbia, a few miles below us; and they drew a map of the country with a coal on a mat. In order to verify this information, Capt. Clarke persuaded one of the young men, by the present of a burning-glass, to accompany him to the river, in search of which he immediately set out with a canoe and seven of our men. In the evening, Capt. Clarke returned from his excursion. After descending about twenty miles, he entered the mouth of a large river, which was concealed, by three small islands opposite its entrance, from those who pass up or down the Columbia. This river, which the Indians call Multnomah, from a nation of the same name residing near it on Wappatoo Island, enters the Columbia one hundred and forty miles above the mouth of the latter river. The current of the Multnomah, which is also called Willamett, is as gentle as that of the Columbia; and it appears to possess water enough for the largest ship, since, on sounding with a line of five fathoms, they could find no bottom. Capt. Clarke ascended the river to the village of his guide. He found here a building two hundred and twenty-six feet in front, entirely above ground, and all under one roof; otherwise it would seem more like a range of buildings, as it is divided into seven distinct apartments, each thirty feet square. The roof is formed of rafters, with round poles laid on them longitudinally. The whole is covered with a double row of the bark of the white cedar, secured by splinters of dried fir, inserted through it at regular distances. In this manner, the roof is made light, strong, and durable. In the house were several old people of both sexes, who were treated with much respect, and still seemed healthy, though most of them were perfectly blind.