Twice my bearers missed their footing, and my heart ceased beating as we plunged toward instant death among the tangled deadwood beneath. But on both occasions those lithe, powerful tails reached out and found sustaining branches, nor did either of the creatures loosen their grasp upon me. In fact, it seemed that the incidents were of no greater moment to them than would be the stubbing of one's toe at a street crossing in the outer world--they but laughed uproariously and sped on with me. For some time they continued through the forest--how long I could not guess for I was learning, what was later borne very forcefully to my mind, that time ceases to be a factor the moment means for measuring it cease to exist. Our watches were gone, and we were living beneath a stationary sun. Already I was puzzled to compute the period of time which had elapsed since we broke through the crust of the inner world. It might be hours, or it might be days--who in the world could tell where it was always noon! By the sun, no time had elapsed--but my judgment told me that we must have been several hours in this strange world. Presently the forest terminated, and we came out upon a level plain. A short distance before us rose a few low, rocky hills. Toward these our captors urged us, and after a short time led us through a narrow pass into a tiny, circular valley. Here they got down to work, and we were soon convinced that if we were not to die to make a Roman holiday, we were to die for some other purpose. The attitude of our captors altered immediately as they entered the natural arena within the rocky hills. Their laughter ceased. Grim ferocity marked their bestial faces--bared fangs menaced us. We were placed in the center of the amphitheater--the thousand creatures forming a great ring about us. Then a wolf-dog was brought--hyaenodon Perry called it--and turned loose with us inside the circle. The thing's body was as large as that of a full-grown mastiff, its legs were short and powerful, and its jaws broad and strong. Dark, shaggy hair covered its back and sides, while its breast and belly were quite white. As it slunk toward us it presented a most formidable aspect with its upcurled lips baring its mighty fangs. Perry was on his knees, praying. I stooped and picked up a small stone. At my movement the beast veered off a bit and commenced circling us. Evidently it had been a target for stones before. The ape-things were dancing up and down urging the brute on with savage cries, until at last, seeing that I did not throw, he charged us. At Andover, and later at Yale, I had pitched on winning ball teams. My speed and control must both have been above the ordinary, for I made such a record during my senior year at college that overtures were made to me in behalf of one of the great major-league teams; but in the tightest pitch that ever had confronted me in the past I had never been in such need for control as now.