One result of that we saw, for all along the street there was fighting, deadly battles between men of far-differing times and races. There was no interference in these combats, for there were none of the guards or Kanlars through all the city, the occupants being left to fight their own battles on the principle of the survival of the fittest. An excited ring of spectators was gathered round each combat, shouting at and cheering the opponents, not dispersing until the fighting was over. As we passed the scene of one such duel, I saw the victor dragging away the body of his late enemy. "Where is he taking it?" I asked of Denham, motioning toward the receding figure. "To the bottom of the stair," was his answer. "There is an iron rule that in any battle where a man is killed, the victor must carry the body of his opponent to the stair and hand it over to the guards there." "But why?" I asked. "For burial above?" Denham smiled grimly. "You saw the slaves in the city above," he said, "but did you notice how strange they were, how glassy-eyed and stiff-moving?" When I nodded, he said, "Well, the slaves of the city above are men who have been killed here in the under-city." At my exclamation of horror, he repeated his statement. "Man," he exclaimed, "you do not know the power of the Kanlars. With the wisdom that is theirs, such an accomplishment is child's-play." "But how done?" I asked. "Ask them," he answered darkly. "In some way they are able to bring back the breath of life into the dead men, to repair the wounds that killed them. They can make them live again, but not even the Kanlars can bring back their souls. They are just living, walking bodies, whom the Kanlars are able to control and to force to work their will in all things. Dead-alive, and slaves to the Kanlars!" I shuddered deeply, for the idea was soul-sickening. Yet I knew now that Denham spoke truth, for I remembered how from my cell in the city above I had seen Talerri, garbed as a slave, Talerri, whom I had killed myself. It was an invention that would have aroused pride in the fiends of lowest hell, thus to raise dead men back to life and use them as servants. And I knew that this was but one of the dark evils that lay concealed under the rule of the laughing, bright-haired Kanlars. * * * * * While we talked we had been moving along the crowded street toward the distant wall of the pit. Finally, very near that wall, Denham turned in at a low, long building that was of white stone, and roofless, like most others in the city. I followed him inside, and looked around curiously.