The bearing of the Trois Tetons was north 50 degrees west, and the direction of the central ridge of the Wind River Mountains south 39 degrees east.

The summit rock was gneiss.

Sienite and feldspar succeeded in our descent to the snow line, where we found a felspathic granite.

I had remarked that the noise produced by the explosion of our pistols had the usual degree of loudness, but was not in the least prolonged, expiring almost instantaneously.

Having now made what observations our means afforded, we proceeded to descend.