They were now in the neighborhood where Mr. Crooks and John Day had been so perfidiously robbed and stripped a few months previously, when confiding in the proffered hospitality of a ruffian band.  On landing at night, therefore, a vigilant guard was maintained about the camp.  On the following morning a number of Indians made their appearance, and came prowling round the party while at breakfast.  To his great delight, Mr. Crooks recognized among them two of the miscreants by whom he had been robbed.  They were instantly seized, bound hand and foot, and thrown into one of the canoes.  Here they lay in doleful fright, expecting summary execution.  Mr. Crooks, however, was not of a revengeful disposition, and agreed to release the culprits as soon as the pillaged property should be restored.  Several savages immediately started off in different directions, and before night the rifles of Crooks and Day were produced; several of the smaller articles pilfered from them, however, could not be recovered.

The bands of the culprits were then removed, and they lost no time in taking their departure, still under the influence of abject terror, and scarcely crediting their senses that they had escaped the merited punishment of their offenses.

The country on each side of the river now began to assume a different character.  The hills, and cliffs, and forests disappeared; vast sandy plains, scantily clothed here and there with short tufts of grass, parched by the summer sun, stretched far away to the north and south.  The river was occasionally obstructed with rocks and rapids, but often there were smooth, placid intervals, where the current was gentle, and the boatmen were enabled to lighten their labors with the assistance of the sail.

The natives in this part of the river resided entirely on the northern side.  They were hunters, as well as fishermen, and had horses in plenty.  Some of these were purchased by the party, as provisions, and killed on the spot, though they occasionally found a difficulty in procuring fuel wherewith to cook them.  One of the greatest dangers that beset the travellers in this part of their expedition, was the vast number of rattlesnakes which infested the rocks about the rapids and portages, and on which the men were in danger of treading.  They were often found, too, in quantities about the encampments.  In one place, a nest of them lay coiled together, basking in the sun.  Several guns loaded with shot were discharged at them, and thirty-seven killed and wounded.  To prevent any unwelcome visits from them in the night, tobacco was occasionally strewed around the tents, a weed for which they have a very proper abhorrence.

On the 28th of July the travellers arrived at the mouth of the Wallah-Wallah, a bright, clear stream, about six feet deep, and fifty-five yards wide, which flows rapidly over a bed of sand and gravel, and throws itself into the Columbia, a few miles below Lewis River.  Here the combined parties that had thus far voyaged together were to separate, each for its particular destination.