They appeared as if one horse had been mounted, and the other led.

They were traced for a few miles above the camp, until they both crossed the river.

It was plain the Snake had taken an Indian mode of recovering his horse, having quietly decamped with him in the night.
New vows were made never more to trust in Snakes, or any other Indians.
It was determined, also, to maintain, hereafter, the strictest vigilance over their horses, dividing the night into three watches, and one person mounting guard at a time.

They resolved, also, to keep along the river, instead of taking the short cut recommended by the fugitive Snake, whom they now set down for a thorough deceiver.

The heat of the weather was oppressive, and their horses were, at times, rendered almost frantic by the stings of the prairie flies.