It was evident to every one that the party was now approaching the foothills of those great mountains of which so much had been heard. Captain Lewis knew that, in order to cross them with as little hard work as possible, they must head for a pass of which they had been told by some of the Indians. Unless they could find this, their efforts would be in vain, and they must turn back, defeated in their daring plans. Three days after leaving their comrades the advancing party came to a good camping ground early in the afternoon, and, as the horses were really in need of a rest, it was concluded to stop here for the night. This was an opportunity the two boys had been waiting for, and they had little difficulty in getting permission from the commander to indulge themselves in a short hunt. The camp was in need of fresh meat, though not desperately so; and if only a deer could be taken it would afford them a few good meals. Captain Lewis, knowing Roger's headstrong ways, took particular pains to caution them before they set out. "See that you take no unnecessary chances, my boys," was what he had said. "We would be very sorry, indeed, to have to bear your parents bad news when next we see St. Louis. But I feel that, so long as Dick is along, you will be careful. And, if you can bring the carcass of a young deer back with you, so much the better." It was a fine afternoon in late summer. There did not seem to be any sign of stormy weather in prospect, from which fact the boys felt sure they would not be compelled to look for a hollow tree as before. First of all they were wise enough to take their bearings, for they certainly did not want to lose themselves in the vast wilderness, since they could no longer depend on finding their friends by simply hunting for the river. Then the next thing was to hunt up into the wind. This was, of course, done so that if they were approaching some keen-nosed game the animal might not scent their presence, and depart before they could get a chance to fire a single shot. It was a wild section of country. They could see, beyond, the mighty barrier of mountains that stood between them and their goal. The woods were composed of scrub trees, with openings here and there; though in most sections, east of the chain of mountains, prairie land existed. From where they looked up to the dizzy heights, the sides of the mountains seemed bleak and rocky. They had been told, however, that on the western slope vegetation grew plentifully, as the winds from the ocean brought much rain, though little of this crossed the divide. The boys pursued their hunt for nearly an hour without coming upon any game, although they saw plenty of signs of it, and were always counting on making a discovery. Versed in forest lore, they knew how to creep along without making any sound likely to give warning of their approach.