And at last, stripped to g-string and carrying naught but his primitive weapons, Korak the Killer took the trail with a score of the swiftest and bravest of the Waziri in search of his father. Long and diligently they searched the jungle and the forest, often enlisting the friendly services of the villages near which they chanced to be carrying on their quest, until they had covered as with a fine-toothed comb a vast area of country, covered it as could have no other body of men; but for all their care and all their diligence they uncovered no single clew as to the fate or whereabouts of Tarzan of the Apes, and so, disheartened yet indefatigable, they searched on and on through tangled miles of steaming jungle or across rocky uplands as inhospitable as the stunted thorns that dotted them. And in the Royal Dome of Elkomoelhago, Thagosto of Veltopismakus, three people halted in a rock walled, hidden chamber and listened to a human voice that appeared to come to them out of the very rock of the walls surrounding them. Upon the floor about them lay the bones of long-dead men. About them rose the impalpable dust of ages. The girl pressed closer to Tarzan. "Who is it?" she whispered. Tarzan shook his head. "It is a woman's voice," said Komodoflorensal. The ape-man raised his candle high above his head and took a step closer to the left hand wall; then he stopped and pointed. The others looked in the direction indicated by Tarzan's finger and saw an opening in the wall a hual or two above his head. Tarzan handed his candle to Komodoflorensal, removed his sword and laid it on the floor, and then sprang lightly for the opening. For a moment he clung to its edge, listening, and then he dropped back into the chamber. "It is pitch black beyond," he said. "Whoever owns that voice is in another chamber beyond that into which I was just looking. There was no human being in the next apartment." "If it was absolutely dark, how could you know that?" demanded Komodoflorensal. "Had there been anyone there I should have smelled him," replied the ape-man. The others looked at him in astonishment. "I am sure of it," said Tarzan, "because I could plainly feel a draught sucking up from the chamber, through the aperture, and into this chamber. Had there been a human being there his effluvium would have been carried directly to my nostrils." "And you could have detected it?" demanded Komodoflorensal. "My friend, I can believe much of you, but not that." Tarzan smiled. "I at least have the courage of my convictions," he said, "for I am going over there and investigate. From the clearness with which the voice comes to us I am certain that it comes through no solid wall. There must be an opening into the chamber where the woman is and as we should investigate every possible avenue of escape, I shall investigate this." He stepped again toward the wall below the aperture. "Oh, let us not separate," cried the girl. "Where one goes, let us all go!"