Wednesday 5. The rain fell during the greater part of the last night, and in the morning the weather was cloudy and cold, with a high northwest wind: at sunrise he proceeded up the river eight miles to the bluff on the left side, towards which he had been directing his course yesterday. Here he found the bed of a creek twenty-five yards wide at the entrance, with some timber, but no water, notwithstanding the rain: it is, indeed, astonishing to observe the vast quantities of water absorbed by the soil of the plains, which being opened in large crevices presents a fine rich loam: at the mouth of this stream (which he called Lark creek) the bluffs are very steep and approach the river so that he ascended them, and crossing the plains reached the river, which from the last point bore N. 50 degrees W: four miles from this place it extended north two miles. Here he discovered a lofty mountain standing alone at the distance of more than eighty miles in the direction of N. 30 degrees W. and which from its conical figure he called Tower mountain. He then proceeded on these two hills and afterwards in different courses six miles, when he again changed for a western course across a deep bend along the south side: in making this passage over the plains he found them like those of yesterday, level and beautiful, with great quantities of buffaloes, and some wolves, foxes, and antelopes, and intersected near the river by deep ravines. Here at the distance of from one to nine miles from the river, he met the largest village of barking squirrels which we had yet seen: for he passed a skirt of their territory for seven miles. He also saw