The tribe whose member was killed by the white men never forgave the injury, and for years after there was no safety for white men in their vicinity except when the wayfarers were in great numbers or strongly guarded.
A forced march was now necessary for the explorers, and they set out as speedily as possible, well knowing that the Indians would be on their trail.

By three o'clock in the afternoon of that day they had reached Tansy River, now known as the Teton, having travelled sixty-three miles.
They rested for an hour and a half to refresh their horses, and then pushed on for seventeen miles further before camping again.

Having killed a buffalo, they had supper and stopped two hours.

Then, travelling through vast herds of buffalo until two o'clock in the morning, they halted again, almost dead with fatigue; they rested until daylight.

On awaking, they found themselves so stiff and sore with much riding that they could scarcely stand.