"I know nothing but that she was found in the fields and that I caught her after a fight in which she slew two rykors and in which I slew a Moak, and that I take her to Luud, to whom, of course, she belongs. If Luud wishes to question her that is for Luud to do--not for me." Thus always he answered the curious. Presently they reached a room from which a circular tunnel led away from the tower, and into this the creature conducted her. The tunnel was some seven feet in diameter and flattened on the bottom to form a walk. For a hundred feet from the tower it was lined with the same tile-like material of the light well and amply illuminated by reflected light from that source. Beyond it was faced with stone of various shapes and sizes, neatly cut and fitted together--a very fine mosaic without a pattern. There were branches, too, and other tunnels which crossed this, and occasionally openings not more than a foot in diameter; these latter being usually close to the floor. Above each of these smaller openings was painted a different device, while upon the walls of the larger tunnels at all intersections and points of convergence hieroglyphics appeared. These the girl could not read though she guessed that they were the names of the tunnels, or notices indicating the points to which they led. She tried to study some of them out, but there was not a character that was familiar to her, which seemed strange, since, while the written languages of the various nations of Barsoom differ, it still is true that they have many characters and words in common. She had tried to converse with her guard but he had not seemed inclined to talk with her and she had finally desisted. She could not but note that he had offered her no indignities, nor had he been either unnecessarily rough or in any way cruel. The fact that she had slain two of the bodies with her dagger had apparently aroused no animosity or desire for revenge in the minds of the strange heads that surmounted the bodies--even those whose bodies had been killed. She did not try to understand it, since she could not approach the peculiar relationship between the heads and the bodies of these creatures from the basis of any past knowledge or experience of her own. So far their treatment of her seemed to augur naught that might arouse her fears. Perhaps, after all, she had been fortunate to fall into the hands of these strange people, who might not only protect her from harm, but even aid her in returning to Helium. That they were repulsive and uncanny she could not forget, but if they meant her no harm she could, at least, overlook their repulsiveness. Renewed hope aroused within her a spirit of greater cheerfulness, and it was almost blithely now that she moved at the side of her weird companion. She even caught herself humming a gay little tune that was then popular in Helium. The creature at her side turned its expressionless eyes upon her. "What is that noise that you are making?" it asked.