“Well, I don’t see how you make that out,” replied the other. “We came in here to discover the source of that heavenly music, and the loud thunder voice that nearly frightens the Indians to death; and looks like we’ve done it. I think we’ve reason to feel satisfied. There, now the violin has sobbed itself out, and perhaps we’ll have a Caruso sending his robust voice through all these underground passages next; or it may be a Melba warbling like a bird in the forest. Ain’t this the most wonderful explanation of the mystery you ever could have dreamed of? And to think that it never struck either of us once!” “How could we guess it,” said Donald; “when we didn’t have the least clue? But listen, he’s started the machine to going again.” This time it was a song bird who filled the underground retreat with music; and as the two spellbound lads, crouching there in the darkness, continued to listen, soon they heard the loud, heavy voice of a well-known statesman filling the chamber with the echoing eloquence of a stump speech, which doubtless had done full duty in the last political campaign, but was now thrilling any listening Zuni with the belief that it was the sonorous voice of Manitou. “Hadn’t we better be getting out of this now?” asked Adrian, after they had stayed to listen to several more wonderful reproductions of the human voice and various musical instruments, among which was a military band. “Yes, we’ve had enough for our money,” returned Donald. “Let the shrewd old wizard have his concert out by himself; Billie will be getting anxious about us, especially if the poor fellow hears a faint sound of all that’s been going on here.” “Perhaps he’ll begin to fear that we’ve been taken up into the other world by a host of angels, or something like that,” chuckled Adrian, as they started to once more cover the ground they had traversed before, Donald using his hand torch now, as the danger of discovery seemed next to nothing. “Do you really think the medicine man meant them to believe that was the voice of Manitou, when he brought this talking machine here?“ questioned Donald, after they had been walking for some time along the tortuous passage, and must be drawing close to the exit at the ledge.