Why could he not follow the robber, watch his camp when he saw him leave it, run up and recover the articles that had been stolen from him, and get away with them before Lish returned? Or, what was to hinder him from making use of the very tactics which the wolfer had so successfully employed—namely, surprising him in his camp, ordering him out of doors at the muzzle of his revolver, and making off with his property; taking with him the robber’s rifle, so that the latter could not pursue him with any hope of success. “I’ll do it!” said Oscar to himself. “We are both out of reach of the law; and, since there is no officer here to protect me, I have a perfect right to protect myself. Yes, sir; I’ll do it.” Oscar was so very highly elated that he could not sit still; so he arose from his stool and walked up and down the cabin while he matured his plans, which were to be carried into operation the following morning. Being afraid to allow the mule his liberty, he cut a quantity of cottonwood boughs which he threw into the stable for him to browse upon; brought him some water from the brook; and, having provided for his comfort as well as he could, left the cabin—with his revolver for company—to make the round of Big Thompson’s traps. He knew that the best way to make the time pass rapidly was to keep busy. By daylight the next morning breakfast had been disposed of; and Oscar, having put on his overcoat—taking care to see that his trusty revolver and a plentiful supply of cartridges were safely stowed away in one of the pockets—released the mule from his prison and sprang upon his back. Did that long-eared animal know where he was going, and what he intended to do? It certainly looked like it; for, during the whole of the journey to and from the wolfer’s cabin, he was under as perfect control of his rider as he would have been if he had had a bit in his mouth. Oscar guided him by touching his head with his hand on the side opposite to that toward which he wished him to turn. But he did not require any guidance at all after he struck the pony’s trail. He followed it through all its windings, and in due time brought his rider to the place where the wolfer had passed the night. It was in his old camp—the one he and Tom had occupied when they first came into the valley. The fire was still burning, and this showed Oscar that he was close upon the heels of the robber. From this point forward Oscar was often obliged to check the mule’s impatience, which he did by talking to him. The animal, if left to himself, would have broken into a gallop and brought the boy face to face with Lish in less than half an hour; but this was something that Oscar particularly wished to avoid.