Climbing a pole is slow work at best, but when one is suspended over the brink of a bottomless chasm and is none too sure of the security of the hook that is holding the pole above, one must needs move cautiously. Yet, even so, Nah-ee-lah scrambled upward so rapidly as to fill me with apprehension for her safety. Nor were my fears entirely groundless, for standing in the mouth of the tunnel, where I could keep one eye upon Nah-ee-lah and the other toward the turn around which my pursuers would presently come in view, I saw the girl’s hands grasp the rim of the crater at the very instant that the hook came loose and the pole dropped past me into the abyss. I might have caught it as it fell, but my whole mind was fixed upon Nah-ee- lah and her grave danger. Would she be able to draw herself upward, or would she fall? I saw her straining frantically to raise her body above the edge of the volcano, and then from up the corridor behind me came an exultant cry and I turned to face a brawny Kalkar who was racing toward me. CHAPTER X THE CITY OF KALKARS Now, indeed, did I have reason to curse the stupidity that had permitted me to cast into the abyss all of the hooked poles save one, since even this one was now lost to me and I was utterly without means of escape from the tunnel. As the fellow approached me at a rapid run I hurled my lance, but being unaccustomed to the weapon, I missed, and then he was upon me, dropping his own lance as he leaped for me, for it was evidently his desire to take me alive and unharmed. I thought that I was going to have him now, for I believed that I was more than a match for him, but there are tricks in every method of attack and this lunar warrior was evidently well schooled in his own methods of offense. He scarcely seemed to touch me, and yet he managed to trip me and push me simultaneously so that I fell heavily backward to the ground and turning a little sideways as I fell, I must have struck my head against the side of the tunnel, for that is the last that I remember until I regained consciousness in the very cave that Nah-ee-lah and I had reached when we saw the first of the Kalkars. I was surrounded by a party of eight of the Kalkars, two of whom were half carrying, half dragging me. I learned later that in the fight before the rostrum I had killed four of their number. The fellow who had captured me was in very good humor, doubtless because of his success, and when he discovered that I had regained consciousness he started to converse with me. “You thought that you could escape from Gapth, did you?” he cried, “but never; you might escape from the others, but not from me—no, not from Gapth.” “I did the principal thing that I desired to do,” I replied, wishing to learn if Nah-ee-lah had escaped. “What is that?” demanded Gapth. “I succeeded in accomplishing the escape of my companion,” I replied.