After one good look the cowman nodded his head again in the affirmative. "Reckon as how y'r' right, Frank," he remarked; "but we'll see how the trail heads." Throwing himself from his saddle he bent down over the remains of the yearling that had been so unfortunate as to become lame, and thus, lagging far behind the rest of the herd, fallen a victim to the wolf pack. "Easy as fallin' off a log," announced old Hank, immediately. "Jest as I was sayin', thar's nearly allers one clumsy cub as don't hev half sense; an' I kin foller this trail on horseback, 'pears to me." He ran it out a little way; then, once more mounting, went on ahead, with his keen eyes fastened on the ground. Bob watched his actions with the greatest of interest. He knew Old Hank was discovering a dozen signs that would be utterly invisible to one who had not had many years of practice in tracking both wild animals and human beings. Now and then the trailer would draw in his horse, as though desirous of looking more carefully at the ground. Twice he even dropped off and bent low, to make positive his belief. "I reckon you were right, Frank," remarked Bob, after half an hour of this sort of travel "because, you see, even if the trail did lead away from the rocks at first, it's heading that way now on a straight line." "Thet was only the cuteness of the ole wolf," said Hank. "She's up t' all the dodges goin'. But that comes a day of reckonin' for all her kind; an' her's orter be showin' up right soon." When another half hour passed the three riders had reached the border of the strange pile of rocks. And as Frank looked up at the rough heap, with its many crevices and angles, he considered that it certainly must offer an ideal den to any wild beast wishing to hide through the daytime, and prowl forth when darkness and night lay upon the land. "Here's whar the trail ends at the rocks," said Hank, as he dismounted and threw the bridle over the head of his horse, cowboy fashion, knowing that under ordinary conditions the animal would remain there, just as if hobbled, or staked out. Both of the saddle boys followed his example, and, holding their rifles ready, prepared to search the rocks for some trace of the wolf den. Wild animals may be very cunning about locating their retreat in a place where it will be hidden from the eye of a casual passer; but, in course of time, they cannot prevent signs from accumulating, calculated to betray its presence to one who is keenly on the watch. The three searchers had not been moving back and forth among the piles of rocks more than ten minutes when Old Hank was observed to raise his head, smile, and sniff the air with more or less eagerness. "Must be close by, boys," he said, positively. "I kin git the rank odor that allers hangs 'round the den of wild animals as brings meat home, an' leaves the bones. The air is a-comin' from that quarter, an' chances are we'll find the hole sumwhar over yonder."