It was horrible. Bradley shuddered. For a long time each sat in silence. The Englishman could guess why the other made no sound--he awaited the moment that sleep should overcome his victim. In the long silence there was born upon Bradley's ears a faint, monotonous sound as of running water. He listened intently. It seemed to come from far beneath the floor. "What is that noise?" he asked. "That sounds like water running through a narrow channel." "It is the river," replied An-Tak. "Why do you not go to sleep? It passes directly beneath the Blue Place of Seven Skulls. It runs through the temple grounds, beneath the temple and under the city. When we die, they will cut off our heads and throw our bodies into the river. At the mouth of the river await many large reptiles. Thus do they feed. The Wieroos do likewise with their own dead, keeping only the skulls and the wings. Come, let us sleep." "Do the reptiles come up the river into the city?" asked Bradley. "The water is too cold--they never leave the warm water of the great pool," replied An-Tak. "Let us search for the way out," suggested Bradley. An-Tak shook his head. "I have searched for it all these moons," he said. "If I could not find it, how would you?" Bradley made no reply but commenced a diligent examination of the walls and floor of the room, pressing over each square foot and tapping with his knuckles. About six feet from the floor he discovered a sleeping-perch near one end of the apartment. He asked An-Tak about it, but the Galu said that no Weiroo had occupied the place since he had been incarcerated there. Again and again Bradley went over the floor and walls as high up as he could reach. Finally he swung himself to the perch, that he might examine at least one end of the room all the way to the ceiling. In the center of the wall close to the top, an area about three feet square gave forth a hollow sound when he rapped upon it. Bradley felt over every square inch of that area with the tips of his fingers. Near the top he found a small round hole a trifle larger in diameter than his forefinger, which he immediately stuck into it. The panel, if such it was, seemed about an inch thick, and beyond it his finger encountered nothing. Bradley crooked his finger upon the opposite side of the panel and pulled toward him, steadily but with considerable force. Suddenly the panel flew inward, nearly precipitating the man to the floor. It was hinged at the bottom, and when lowered the outer edge rested upon the perch, making a little platform parallel with the floor of the room.