In those hours the door of our cell never opened, and we found that our food and water were supplied to us inside the cell itself. There were in its wall two metal taps, one of which yielded clear water, that tasted flat and chemical to us. The other gave forth a thick, viscous white liquid, which we recognized after a time as a liquefied preparation of the white vegetables and fruits we had seen grown so rapidly. This preparation or liquid was apparently pumped through the compartment-city like the water. Thus there was no need for the guards to enter our cell. It was a number of hours later that there came an interruption to the monotony of eventlessness of our time, which roused us somewhat from the gloomy apathy of spirit into which we had fallen. Without warning there sprang into being all about us an intensely brilliant flood of pure white light, that bathed all things about us in its blinding glare for the moment and then swiftly moved away toward the dark side of Triton. We were stupefied by its appearance thus, and then remembered suddenly the great band of brilliant light that we had seen appear and move swiftly, completely around Triton, marking the end of a ten-hour period and the signal for the sleeping millions of Neptunians on Triton's dark side and the busy millions on its sunward side to change places upon this strange world. Surely enough, in a few moments, the brilliant band of light had swept upon us from the sunward side, having traveled completely around Triton, and dwelling for a moment again upon us, had snapped out of being. That great brilliant band of light, as we were to learn, was produced by great projectors at Triton's two poles, and whirled around it by the turning of those projectors. Now as its brilliant signal swept around the big moon-world, we could hear the countless hordes of the Neptunians shifting from dark side to sunward, and from sunlit side to dark, while overhead there throbbed and shot this way and that innumerable cylinders.