reveal the whole interior to Tarzan. The room was fairly large and there was a door at each end—a large door for men and a smaller one for lions. Both were closed with heavy masses of stone that had been lowered in grooves running to the floor. The two windows were small and closely barred with the first iron that Tarzan had seen in Pal-ul-don. The bars were let into holes in the casing, and the whole so strongly and neatly contrived that escape seemed impossible. Yet within a few minutes of his incarceration Tarzan had commenced to undertake his escape. The old knife in his pouch was brought into requisition and slowly the ape-man began to scrape and chip away the stone from about the bars of one of the windows. It was slow work but Tarzan had the patience of absolute health.
Each day food and water were brought him and slipped quickly beneath the smaller door which was raised just sufficiently to allow the stone receptacles to pass in. The prisoner began to believe that he was being preserved for something beside lions. However that was immaterial. If they would but hold off for a few more days they might select what fate they would—he would not be there when they arrived to announce it.
And then one day came Pan-sat, Lu-don's chief tool, to the city of Tu-lur. He came ostensibly with a fair message for Mo-sar from the high
