On the 7th, early in the morning, we passed the river Day—not broad, but pretty deep, and distant about thirty miles from the river Lowhum.[34] In all directions, the face of the country is one wide and boundless plain, with here and there some trifling inequalities, but not a tree nor bush to be seen. General course as yesterday. On the 8th, after a quiet and comfortable night’s rest, we embarked early; and hoisting sail with a fair wind, we scudded along at a good rate till two o’clock in the afternoon, when, all of a sudden, a squall overtook us and broke the mast of one of our canoes, which, in the hurry and confusion of the moment, {124} filled with water, so that we had great difficulty in getting safe to shore. The day being fine, we set about drying our things, and for that purpose began to spread them out, for every article had got thoroughly soaked; but this task we had no sooner commenced than the Indians flocked about us in great numbers. We therefore soon perceived the impropriety and danger of exhibiting so great a temptation before their eyes. In a few minutes we were almost surrounded by bows and arrows, one volley of which might have extinguished the expedition for ever; and one of the fellows had the audacity to shoot an arrow into one of our bales, as a warning of what might follow. In short, we thought we could read in the savage expression of their countenances some dark design; we therefore immediately commenced loading. Wet and dry were bundled together, and put into the canoes; and in order to amuse for a moment, and attract the attention of the crowd, I laid hold of an axe, and set it up at the distance of eighty yards, then taking up my rifle, drove a ball through it. This manœuvre had the desired effect. While the Indians stood gazing with amazement at the hole in the axe, our people were not idle. We embarked and got off without a word on either side. Having reached a small, snug island near the Suppa river, we put ashore for the night.[35] Course as yesterday. The 9th, we remained all day encamped drying the goods, and were visited only by the Indians in one canoe, who sold us a fine salmon. {125} On the 10th, at an early hour, we proceeded on our voyage, and met with no obstacle till the evening, when we arrived at the foot of a long and strong rapid, where we encamped near the mouth of a considerable river called Umatallow, which enters the Columbia here. This river takes its rise in a long range of blue mountains, which runs nearly east and west, and forms the northern boundary of the great Snake nation. Opposite to our encampment, on the west side, is situated a large mound or hill of considerable height, which, from its lonely situation and peculiar form, we called Dumbarton Castle.[36] During this day we saw many Indians, all occupied in catching salmon. Course as usual.