The halt was a short one; for already a faint light, different from that of the moon, was stealing over the eastern bluffs, and the Indians must have their prisoner far away from there by sunrise. There were three of them now, as well as some ponies and a mule. Glen could also see a great many white objects scattered about the ground. They were bleached buffalo bones. As he recognized them, he knew he was at the old Indian camping-ground he had visited the evening before, and from which one of those coyote howls had seemed to come. So it had; but it had been uttered by the young Cheyenne left there in charge of the animals, in answer to the howls of the two other human coyotes, who, prowling about the engineers' camp, had finally made Glen a prisoner.