"The dividing ridge of the Sierra Nevada is in sight from this encampment. Accompanied by Mr. Preuss, I ascended to-day the highest peak to the right, from which we had a beautiful view of a mountain lake at our feet, about 15 miles in length, and so entirely surrounded by mountains that we could not discover an outlet. We had taken with us a glass, but though we enjoyed an extended view, the valley was half hidden in mist, as when we had seen it before. Snow could be distinguished on the higher parts of the coast mountains; eastward, as far as the eye could extend, it ranged over a terrible mass of broken snowy mountains, fading off blue in the distance. The rock composing the summit consists of a very coarse, dark, volcanic conglomerate: the lower parts appeared to be of a very slatey structure. The highest trees were a few scattered cedars and aspens. From the immediate foot of the peak we were two hours in reaching the summit, and one hour and a quarter in descending. The day had been very bright, still, and clear, and spring seems to be advancing rapidly. While the sun is in the sky the snow melts rapidly, and gushing springs cover the face of the mountain in all the exposed places, but their surface freezes instantly with the disappearance of the sun. "The Indians of the Sierra make frequent descents upon the settlements west of the Coast Range, which they keep constantly swept of horses; among them are many who are called Christian Indians, being refugees from Spanish missions. Several of these incursions occurred while we were at Helvetia. Occasionally parties of soldiers follow them across the Coast Range, but never enter the Sierra." [Illustration: SIERRA NEVADA, UPPER CALIFORNIA.]