Mr. Hauser, Lieutenant Doane and I saddled up immediately after breakfast, and, with a supply of provisions for Mr. Everts, pressed forward in advance of the rest of the party, marking a trail for the pack animals through the openings in the dense woods, and avoiding, as far as possible, the fallen timber. We rode through with all possible dispatch, watching carefully for the tracks of a horse, but found no sign of Mr. Everts. We followed both the beach and the trail on the bank for several miles in either direction, but we saw neither sign nor track. The small stream which we crossed on the 9th does not flow into this arm of the lake as we thought it might, and it is evidently a tributary of the Snake river. The pack train arrived early in the afternoon with the rest of the party, and all were astonished and saddened that no trace of Mr. Everts had been found. We shall to-night mature a plan for a systematic search for him. It is probable that we will make this camp the base of operations, and remain here several days. Everts has with him a supply of matches, ammunition and fishing tackle, and if he will but travel in a direct line and not veer around to the right or left in a circle, he will yet be all right. Directly west of our camp on the further side of this arm of the lake, and about four miles distant, are several hot springs which we shall visit before leaving the lake. We were roused this morning about 2 o'clock by the shrill howl of a mountain lion, and again while we were at breakfast we heard another yell. As we stood around our campfire to-night, our ears were saluted with a shriek so terribly human, that for a moment we believed it to be a call from Mr. Everts, and we hallooed in response, and several of our party started in the direction whence the sounds came, and would have instituted a search for our comrade but for an admonitory growl of a mountain lion. We have traveled to-day about seven miles. On leaving our camps yesterday and to-day, we posted conspicuously at each a placard, stating clearly the direction we had taken and where provisions could be found. The country through which we have passed for the past five days is like that facetiously described by Bridger as being so desolate and impassable and barren of resources, that even the crows flying over it were obliged to carry along with them supplies of provisions.