Consequently, although they might be traversing country that neither of them had ever set eyes on before, they always knew just which way to head in order to reach camp. Dick was constantly taking mental notes as he went along. These included not only the prospects for game, but the lay of the land, for Captain Lewis wished to know all that was possible about such things before once more starting out in the spring to complete his great trip to the Western Sea. At the same time, Dick was also on the alert for every sign of danger, from whatever source. His keen vision took in all that went on around him. Not a leaf rustled to the ground, as some passing breeze loosened its hold on the branch above, but he saw it eddying through the air; never a little ground squirrel frisked behind some lichen-covered rock, or tree root, that Dick did not instantly note. They presently found themselves traversing what seemed to be a rough belt of rocky land, where the trees were not very plentiful. It was even difficult at times to advance, and they had to be careful where they placed their feet, since a fall might result in serious bruises. Just as they passed around a huge bowlder, that had at some time fallen from the face of the cliff towering above them, the two boys heard a queer, sniffing sound. Before either had time to draw back, there came shuffling into view, not more than fifty feet beyond them, a terrifying figure such as they had never up to that moment set eyes upon. It was a huge bear, far larger than any they had met with in all their hunting trips along the Missouri. From some of the hunters connected with the exploring party they had heard the wildest stories concerning a monster species of brown, or grizzly bear that was said to have its home amidst the rocky dens of the mountains and foothills lying to the west. The Indians always spoke of this animal as though it were to be dreaded more than any creature of the wilds. The brave who could produce the long claws of a grizzly bear was immediately honored with the head feathers of a chief. Dick knew, therefore, that they were now facing one of these terrible animals. He could well understand the awe with which they were viewed by the red men, and the half-breed trappers, for the appearance of this monster was certainly alarming. Perhaps, if left to his own device, the more cautious Dick might have considered it best for them to decline a combat and, if the bear did not attack them, they could withdraw and seek a safer trail across the rocky ridge. In figuring on this course, however, he failed to count on the impetuous nature of his companion. The hunter-instinct was well developed in Roger. He looked upon nearly everything that walked on four feet and carried a coat of fur as his legitimate prize, if only he could succeed in placing a bullet where it would do the most good.