I could not but smile to myself when I realized that we were now continuing directly along the same corridor as that which we had entered immediately after they had first blindfolded me, their little excursion through the short corridor into the second chamber having been but a ruse to bewilder me. A moment later, at the foot of a flight of steps they removed the blind, evidently satisfied that there was now no chance of my being able to retrace my steps and find the main tunnel leading to the crater, while, as a matter of fact, I could easily have retraced every foot of it blindfolded. From here on we climbed interminable stairways, passed through numerous corridors and chambers, all of which were illuminated by the radium-bearing substance which coated their walls and ceilings, and then we emerged suddenly upon a terrace into the open air, and I obtained my first view of a lunar city. It was built around a crater, and the buildings were terraced back from the rim, the terraces being generally devoted to the raising of garden truck and the principal fruit-bearing trees and shrubs. The city extended upward several hundred feet, the houses, as I learned later, being built one upon another, the great majority of them, therefore, being without windows looking upon the outer world. I was led along the terrace for a short distance, and during this brief opportunity for observation I deduced that the cultivated terraces lay upon the roofs of the tier of buildings next below. To my right I could see the terraced steps extending downward to the rim of the crater. Nearly all the terraces were covered with vegetation, and in numerous places I saw what appeared to be Va-gas feeding upon the plants, and this I later learned was the fact, and that the Kalkars, when they are able to capture members of the race of Va-gas, keep them in captivity and breed them as we breed cattle, for their flesh. It is necessary, to some extent, to change the diet of the Va-gas almost exclusively to vegetation, though this diet is supplemented by the flesh of the Kalkars, and their Laythean slaves who die, the Va-gas thus being compelled to serve the double purpose of producing flesh for the Kalkars and acting as their scavengers as well. Upon my left were the faces of buildings, uniformly two stories in height, with an occasional slender tower rising fifteen, twenty or sometimes as high as thirty feet from the terraced roofs above. It was into one of these buildings that my captors led me after we had proceeded a short distance along the terrace, and I found myself in a large apartment in which were a number of male Kalkars, and at a desk facing the entrance a large, entirely bald man who appeared to be of considerable age. To this person I was led by Gapth, who narrated my capture and the escape of Nah-ee-lah.