About noon we crossed a small stream that flows towards the southwest arm of the lake, but which, I think, is one of the headwater streams of Snake river. I think that we have crossed the main divide of the Rocky Mountains twice to-day. We have certainly crossed it once, and if we have not crossed it twice we are now camped on the western slope of the main divide. If the creek we crossed about noon to-day continues to flow in the direction it was running at the point where we crossed it, it must discharge into the southwest arm of the lake, and it seems probable that Mr. Everts has followed down this stream. I have just had a little talk with Lieutenant Doane. He thinks that our camp to-night is on the Snake river side of the main divide, and there are many things that incline me to believe that he is correct in his opinion.[R] Last night we had a discussion, growing out of the fact that Hedges and Stickney, for a brief time, were lost, for the purpose of deciding what course we would adopt in case any other member of the party were lost, and we agreed that in such case we would all move on as rapidly as possible to the southwest arm of the lake, where there are hot springs (the vapor of which we noticed from our camp of September 5th), and there remain until all the party were united. Everts thought a better way for a lost man would be to strike out nearly due west, hoping to reach the headwaters of the Madison river, and follow that stream as his guide to the settlements; but he finally abandoned this idea and adopted that which has been approved by the rest of the party. So if Mr. Everts does not come into camp to-night, we will to-morrow start for the appointed rendezvous. Saturday, September 10.--We broke camp about 10 o'clock this morning, taking a course of about ten degrees north of west, traveling seven miles, and coming to camp on the lake shore at about five miles in a direct line from our morning camp at half past two p.m. No sign of Mr. Everts has been seen to-day, and on our arrival in camp, Gillette and Trumbull took the return track upon the shore of the lake, hoping to find him, or discover some sign of him. A large fire was built on a high ridge commanding all points on the beach, and we fired signal guns from time to time throughout the night. Mr. Hauser and I ascended a high point overlooking our camp, and about eight hundred feet above it, where from the top of a tall tree I had a fairly good view of the shore outline of the west and south shores of the lake, with all the inlets, points and islands. We were also enabled to mark out our course of travel which it would be necessary to follow in order to reach the most southwesterly arm of the lake and take advantage of openings in the timber to facilitate travel. On this high point we built a large fire which could be seen for many miles in all directions by any one not under the bank of the lake, and which we hoped Mr. Everts might see, and so be directed to our camp.