When I had come upon him he was clothed in rough sadak sandals, a gee-string and a tunic fashioned from the shaggy hide of a thag. Now he wore real clothing again for the first time since the ape-folk had stripped us of our apparel that long-gone day that had witnessed our advent within Pellucidar. With a bandoleer of cartridges across his shoulder, two six-shooters at his hips, and a rifle in his hand he was a much rejuvenated Perry. Indeed he was quite a different person altogether from the rather shaky old man who had entered the prospector with me ten or eleven years before, for the trial trip that had plunged us into such wondrous adventures and into such a strange and hitherto undreamed-of-world. Now he was straight and active. His muscles, almost atrophied from disuse in his former life, had filled out. He was still an old man of course, but instead of appearing ten years older than he really was, as he had when we left the outer world, he now appeared about ten years younger. The wild, free life of Pellucidar had worked wonders for him. Well, it must need have done so or killed him, for a man of Perry’s former physical condition could not long have survived the dangers and rigors of the primitive life of the inner world. Perry had been greatly interested in my map and in the “royal observatory” at Greenwich. By use of the pedometers we had retraced our way to the prospector with ease and accuracy. Now that we were ready to set out again we decided to follow a different route on the chance that it might lead us into more familiar territory. I shall not weary you with a repetition of the countless adventures of our long search. Encounters with wild beasts of gigantic size were of almost daily occurrence; but with our deadly express rifles we ran comparatively little risk when one recalls that previously we had both traversed this world of frightful dangers inadequately armed with crude, primitive weapons and all but naked. We ate and slept many times—so many that we lost count—and so I do not know how long we roamed, though our map shows the distances and directions quite accurately. We must have covered a great many thousand square miles of territory, and yet we had seen nothing in the way of a familiar landmark, when from the heights of a mountain-range we were crossing I descried far in the distance great masses of billowing clouds. Now clouds are practically unknown in the skies of Pellucidar. The moment that my eyes rested upon them my heart leaped. I seized Perry’s arm and, pointing toward the horizonless distance, shouted: “The Mountains of the Clouds!” “They lie close to Phutra, and the country of our worst enemies, the Mahars,” Perry remonstrated. “I know it,” I replied, “but they give us a starting-point from which to prosecute our search intelligently. They are at least a familiar landmark. “They tell us that we are upon the right trail and not wandering far in the wrong direction.