side of the cave where Joe was in hiding; and, plucking up courage, the youth started forward on tiptoe, bent upon getting out of the cave before the men should make some move which would expose him.
Step by step he advanced, until he reached a point where he was within a dozen feet of Gilroy and almost as close to Potts. He hardly dared to breathe, and his heart thumped madly beneath his jacket. But the men continued to smoke and talk, unconscious of his proximity.
At the entrance to the cave the rocks were somewhat rough and the mist had made them slippery. Joe was crawling forward rapidly, when one foot slipped, and he pitched headlong, making considerable noise.
"What was that?" cried Matt Gilroy, and leaped to his feet. He had been gazing into the fire, and for the moment could make out little in the darkness.
"I don't know," returned Nat Potts. "Something moving around out there, I think." And the younger man reached for his pistol, which still remained in his belt.
As rapidly as he could Joe sprang to his feet. A good bit of his wind had been knocked out of him, but he felt that he must not delay, and he ran for the outer air gasping for breath.
