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.

Monday, September 12.—In accordance with our pre-arranged programme, three parties were sent out this morning in search of Mr. Everts. Smith and Trumbull were to follow the take shore until they came in sight of our last camp. Hauser and Gillette were to return on our trail through the woods, taking with them their blankets and two days' rations. General Washburn and myself were to take a southerly direction towards what we called "Brown Mountain," some twelve miles away. Smith and Trumbull returned early in the afternoon and reported having seen in the sand the tracks of a man's foot, and Smith thought that he saw several Indians, who disappeared in the woods as they approached; but Trumbull, who was with him, did not see them, and Smith says it was because he was short-sighted. For some reason they did not pursue their investigations farther, and soon returned in good order to camp.

The reconnaissance made by General Washburn and myself resulted in no discovery of any trace of Everts. We traveled about eleven miles directly south, nearly to the base of Brown mountain, carefully examining the ground the whole of the way, to see if any horseshoe tracks could be discovered. We crossed no stream between the lake and the mountain, and if Mr. Everts followed the stream which we crossed on the 9th, he is south of Brown mountain, for it is evident that he did not pass westward between Brown mountain and Yellowstone lake; otherwise we would have discovered the tracks of his horse.

It is now night, and Hauser and Gillette have not yet returned.

Two miles on this side (the north side) of Brown mountain, Washburn and I passed over a low divide, which, I think, must be the main range of the Rocky Mountains, just beyond which is another brimstone basin containing forty or fifty boiling sulphur and mud springs, and any number of small steam jets. A small creek runs through the basin, and the slopes of the mountains on either side to the height of several hundred feet showed unmistakable signs of volcanic action beneath the crust over which we were traveling. A considerable portion of the slope of the mountain was covered with a hollow incrustation of sulphur and lime, or silica, from which issued in many places hot steam, and we found many small craters from six to twelve inches in diameter, from which issued the sound of the boiling sulphur or mud, and in many instances we could see the mud or sulphur water. There are many other springs of water slightly impregnated with sulphur, in which the water was too hot for us to bear the hand more than two or three seconds, and which overflowed the green spaces between the incrustations, completely saturating the ground, and over which in many places the grass had grown, forming a turf compact and solid enough to bear the weight of a man ordinarily; but when it once gave way the underlying deposit was so thin that it afforded no support. While crossing, heedless of General Washburn's warning, one of these green places, my horse broke through and sank to his body as if in a bed of quicksand. I was off his back in an instant and succeeded in extricating the struggling animal, the turf being strong enough to bear his body alone, without the addition of the weight of a man. The fore legs of my horse, however, had gone through the turf into the hot, thin mud beneath. General Washburn, who was a few yards behind me on an incrusted mound of lime and sulphur (which bore us in all cases), and who had just before called to me to keep off the grassy place, as there was danger beneath it, inquired of me if the deposit beneath the turf was hot. Without making examination I answered that I thought it might be warm. Shortly afterwards the turf again gave way, and my horse plunged more violently than before, throwing me over his head, and, as I fell, my right arm was thrust violently through the treacherous surface into the scalding morass, and it was with difficulty that I rescued my poor horse, and I found it necessary to instantly remove my glove to avoid blistering my hand. The frenzied floundering of my horse had in the first instance suggested to General Washburn the idea that the under stratum was hot enough to scald him. General Washburn was right in his conjecture. It is a fortunate circumstance that I to-day rode my light-weight pack horse; for, if I had ridden my heavy saddle horse, I think that the additional weight of his body would have broken the turf which held up the lighter animal, and that he would have disappeared in the hot boiling mud, taking me with him.

At the base of Brown mountain is a lake, the size of which we could not very accurately ascertain, but which was probably about two miles long by three-quarters of a mile wide. On the south end appeared to be an outlet, and it seems to be near the head of the Snake river. Owing to the difficulty of reaching the beach, growing out of the mishaps arising from the giving way of the turf, as I have described, our nearest approach to the lake was about one-half of a mile.

During the absence of Washburn and myself Mr. Hedges has spent the day in fishing, catching forty of the fine trout with which the lake abounds. Mr. Stickney has to-day made an inventory of our larder, and we find that our luxuries, such as coffee, sugar and flour, are nearly used up, and that we have barely enough of necessary provisions—salt, pepper, etc., to last us ten days longer with economy in their use. We will remain at the lake probably three or four days longer with the hope of finding some trace of Everts, when it will be necessary to turn our faces homewards to avoid general disaster, and in the meantime we will dry a few hundred pounds of trout, and carry them with us as a precautionary measure against starvation. At all of our camps for the past three days, and along the line of travel between them, we have blazed the trees as a guide for Mr. Everts, and have left a small supply of provisions at each place, securely cached, with notices directing Mr. Everts to the places of concealment. The soldiers' rations issued for thirty days' service will barely hold out for their own use, and we have little chance of borrowing from them. We left Helena with thirty days' rations, expecting to be absent but twenty-five days. We have already been journeying twenty-seven days, and are still a long way from home.