In this manner, the party on foot leading those with the canoes, they repeatedly explored the various forks of the streams, which baffled them by their turnings and windings.

Lewis was in the advance, and Clark brought up the rear with the main body.

It was found necessary for the leading party to wade the streams, and occasionally they were compelled by the roughness of the way to leave the water-course and take to the hills, where great vigilance was required to keep them in sight of the general direction in which they must travel.

On the 11th of August, 1805, Captain Lewis came in sight of the first Indian encountered since leaving the country of the Minnetarees, far back on the Missouri.

The journal of that date says: "On examining him with the glass Captain Lewis saw that he was of a different nation from any Indians we had hitherto met.