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Show 118 TUILLA VALLEY. tion of the range, the strata were again found to be much displaced and almost vertical. They were composed of limestone and shales, overlaid in some places by conglomerate. Salt springs were very numerous in this locality. After doubling the point, we came upon another valley, similar to the one through which we had just passed, and from which it was divided by the ridge or mountain just described. Our true course here, also, was to cross this valley in an easterly direction, and strike the northern point of another range where it terminates immediately on the southern shore of the Salt Lake, now plainly visible; but the numerous salt springs, as in the case of that passed yesterday, rendered a straight course impracticable. Consequently, after following the eastern base of the ridge about six miles to the south, we began gradually to diverge from it to the eastward, and at dark encamped in the prairie, near a noble spring of fresh, cold water, with abundance of excellent grass, and an extensive grove of large willows for fuel. A fierce gale sprang up from the south- east, which kept us in a constant state of alarm during the night, lest we should be burned in our beds from the tall dry grass taking fire. It had in fact kindled several times, and the flame was extinguished with some difficulty, rendering a strict watch necessary until morning. This valley is called " Tuilla Valley" by the Mormons, and forms an excellent pasturage for numerous herds of cattle, wintered here by them under the charge of keepers. The grass is very abundant, and numerous springs are found on both sides of it. On the eastern side of the mountain, which divides it from Spring Valley, the same geological appearances occur as were seen yesterday at the point of the range and on its western side. The limestones were thrown up at a very great angle, and in some places the strata were perpendicular. Another mule gave out to- day, and was necessarily abandoned. Ther. at sunset, 43°. Wednesday, November 7.- Ther. at sunrise, 47°. Starting early in the morning, we crossed to the eastern side of the valley, followed the base of the mountain to its northern extremity, and reached the shores of the Great Salt Lake near Black Bock, whence we crossed the valley of the Jordan, over sterile artemisia plains, and reached the city in the afternoon- being the first party of white men that ever succeeded in making the entire circuit of the lake by land. Attempts had, in early times, been made to |