rocketed over one of its oceans, seeming hardly more than a pond to my eyes after the mighty seas of Jupiter and the vast ice-fringed oceans of Neptune; and then, as we flashed over land again, there loomed up far ahead the gigantic white dome of the great Hall of Planets, permanent seat of the Supreme Council and the center of government of the Eight Worlds. A single titanic structure of gleaming white, that reared its towering dome into the air for over two thousand feet, it grew swiftly larger as we raced on toward it. In a moment we were beside it, and the cruiser was slanting down toward the square landing-court behind the great dome. As we came to rest there without a jar, I snapped open a small door in the conning-tower's side, and in a moment had descended to the ground by means of the ladder inset in the cruiser's side. At once there ran forward to meet me a thin, spectacled young man in the red-slashed robe of the Scientists, an owlish-looking figure at whom I stared for a moment in amazement. Then I had recovered from my astonishment and was grasping his hands. "Sarto Sen!" I cried. "By the Power, I'm glad to see you! I thought you were working in the Venus Laboratories." My friend's eyes were shining with welcome, but for the moment he wasted no time in speech, hurrying me across the court toward the inner door of the great building. "The Council is assembling at this moment," he explained rapidly as we hastened along. "I got the chairman, Mur Dak, to hold up the meeting until you arrived." "But what's it all about?" I asked, in bewilderment. "Why wait for me?" "You will understand in a moment," he answered, his face grave. "But here is the Council Hall." By that time we had hastened down a series of long white corridors and now passed through a high-arched doorway into the great Council Hall itself. I had visited the place before—who in the Eight Worlds has not?—and the tremendous, circular room and colossal, soaring dome above it were not new to me, but now I saw it as few ever did, with the eight hundred members of the Supreme Council gathered in solemn session. Grouped in a great half-circle around the dais of the chairman stretched the curving rows of seats, each occupied by a member, and each hundred members gathered around the symbol of the world they represented, whether that world was tiny Mercury or mighty Jupiter. On the dais at the center stood the solitary figure of Mur Dak, the chairman. It was