At sunset the thermometer was at 40°, and the night was very clear and bright. Water was only to be had here by descending a bad ravine, into which we drove our animals, and had much trouble with them in a very close growth of small pines. Mr. Preuss had walked ahead and did not get into the camp this evening. The trees here maintained their size, and one of the black spruces measured 15 feet in circumference. In the neighborhood of the camp, pines have reappeared here among the timber.
23d.--The morning was very clear; there had been a heavy white frost during the night, and at sunrise the thermometer was at 31°.
After cutting through two thick bodies of timber, in which I noticed some small trees of _hemlock_ spruce, (_perusse_) the forest became more open, and we had no longer any trouble to clear a way. The pines here were 11 or 12 feet in circumference, and about 110 feet high, and appeared to love the open grounds. The trail now led along one of the long spurs of the mountain, descending gradually towards the plain; and after a few miles traveling, we emerged finally from the forest, in full view of the plain below, and saw the snowy mass of Mount Hood, standing high out above the surrounding country at the distance of 180 miles. The road along the ridge was excellent, and the grass very green and good; the old grass having been burnt off early in the autumn. About 4 o'clock in the afternoon we reached a little bottom of the Walahwalah river, where we found Mr. Preuss, who yesterday had reached this place, and found himself too far in advance of the camp to return. The stream here has just issued from the narrow ravines, which are walled with precipices, in which the rock has a brown and more burnt appearance than above.
At sunset the thermometer was at 48°, and our position was in longitude 118° 00' 39", and in latitude 45° 53' 35".
The morning was clear, with a temperature at sunrise of 24°. Crossing the river, we traveled over a hilly country with a good bunch-grass; the river bottom, which generally contains the best soil in other countries, being here a sterile level of rocks and pebbles. We had found the soil in the Blue mountains to be of excellent quality, and it appeared also to be good here among the lower hills. Reaching a little eminence over which the trail passed, we had an extensive view along the course of the river, which was divided and spread over its bottom in a network of water, receiving several other tributaries from the mountains. There was a band of several hundred horses grazing on the hills about two miles ahead; and as we advanced on the road we met other bands, which Indians were driving out to pasture also on the hills. True to its general character, the reverse of other countries, the hills and mountains here were rich in grass, the bottoms barren and sterile.