And somehow, what Donald had told about that mysterious music, the strains of which often floated faintly to the ears of the Zuni people after their medicine man had betaken himself off to one of these famous audiences with Manitou, had taken a firm hold on the mind of Adrian. He hoped that before they quitted the country of the Zunis a chance would arise whereby they could find out if there was really any truth in these stories; and should it prove to be so, learn just what caused the music that the ignorant natives believed supernatural or angel voices. And as has already been said, Billie went along simply because he was afraid to stay there alone, and not that he felt any particular interest in either gold mines or cherub voices. Two minutes later, and Donald held up a hand warningly. That was enough to tell the others he had sighted the object of their pursuit. And as they did not wish to let the hideous figure that stalked along ahead know how he was being followed, they hung back until their guide again beckoned them on. “He’s just gone back of that line of brush yonder,” Donald whispered, as they joined him. “Let’s wait here a minute, to give him a chance to move along. And we can keep an eye on that cliff over yonder; because, unless I’m mistaken, he was heading that way when last I glimpsed him.” They crouched there and waited, Billie nervously fingering his camera, as if in readiness to use it again should the chance arise. “There he goes!” ejaculated Adrian, suddenly. “Oh! where?” asked Billie, giving a start, as if he had at first suspected that the old fellow might have stolen a march upon them; and from the way Billie looked above his head one would think he half expected that that hideous figure would come tumbling down upon them, his arms filled with rattlesnakes, perhaps. “Over near the cliff, just as I said,” replied Donald, pointing as he spoke. “I see him, all right,” announced Billie, immediately, as though that were something worth mentioning. “Looks like he meant to climb up somewhere,” suggested Adrian. “We’ll watch, and see the circus, then,” added Donald; “but better keep down, so he won’t glimpse us if he happens to look back this way.” “That’s good advice!” muttered Billie, dropping flat, and then poking his head up as best he knew how, so that he might see without betraying his presence; Billie had not been in the company of these two prairie boys for weeks without picking up at least a smattering of the things they knew. “Why, he’s gone!” he exclaimed, a second or two later; and commenced to rub his eyes vigorously, as though inclined to suspect that they had played him a trick. “Did you see that?” remarked Donald, of Adrian; for they had been looking all the time Billie was fussing, and getting himself so nicely fixed that he had temporarily lost track of the medicine man.