"He's no' climbit it," said Billy. "He's gone up an' around it. The lad knew eneuch aboot the mines for that." They passed up into the chambers, but the floor was too dry to take the impress of footsteps, and they found no trace of the boy. When they reached the upper limit of the fall, Billy said:-- "We mus' turn sharp to the left here, or we'll no' get back. It's a tarrible windin' headin'." But Conway had discovered tracks, faintly discernible, leading across into a passage used by men and mules to shorten the distance to the inner workings. "He's a-goin' stret back," said Billy, sorrowfully, as they slowly followed these traces, "he's a-goin' stret back to whaur he cam' through." Surely enough the prints of the child's feet soon led the tired searchers back to the opening from Conway's chamber. They looked at each other in silent disappointment, and sat down for a few moments to rest and to try to think. Bachelor Billy was the first to rise to his feet. "Mike," he said, "the lad's i' this auld mine. Be it soon or late I s'all find 'im. I s'all search the place fra slope to headin'-face. I s'all no' gae oot till I gae wi' the boy or wi' 'is body; what say ye? wull ye help?" Conway grasped the man's hand with a pressure that meant more than words, and they started immediately to follow their last track back. They passed up and down all the chambers in the tier till they reached the point, at the upper limit of the fall, where Ralph had turned into the foot-way. Their search had been a long and tiresome one and had yielded to them no results. They began to appreciate the fact that a thorough exploration of the mine could not be made in a short time by two worn-out men. Billy blamed himself for not having thought sooner to send for other and fresher help. "Ye mus' go now, Mike," he said. "Mayhap it'd take days wi' us twa here alone, an' the lad's been a-wanderin' aroun' so." But Conway demurred. "You're the one to go," he said. "You can't stan' it in here much longer, an' I can. You're here at the risk o' your life. Go on out with ye an' get a bit o' the fresh air. I'll stay and hunt for the boy till the new men comes." But Bachelor Billy was in earnest. "I canna do it," he said. "I would na get farther fra the lad for warlds, an' him lost an' a-dyin' mayhap. I'll stan' it. Never ye fear for me! Go on, Mike, go on quick!" Conway turned reluctantly to go. "Hold out for an hour," he shouted back, "an' we'll be with ye!" Before the sound of his footsteps had died away, Billy had picked up his lamp again and started down on the easterly side of the fall, making little side excursions as he went, hunting for foot-prints on the floor of the mine.