Zezdon Fentes' message was brief. He had discovered from the minds of several who had been killed by the magnetic field Arcot had used, and not destroyed, that they had a base in this universe. Thett's base was somewhere near the center of the galaxy, on a system of unusually large planets, circling a rather small star. But what star their minds had not revealed. "It's up to us then to locate said star," said Arcot, after listening to Zezdon Fentes' account: "I think the easiest way will be to follow them home. We can go to your world, Zezdon Fentes, and see what they are doing there, and drive them off. Then to yours, Stel Felso. I place your world second as it is far better able to defend itself than is Ortol. It is agreeable?" It was, and the ship which had been hanging in the atmosphere over New York, where Zezdon Afthen, Fentes and Inthel had come to it in a taxi-ship, signaled for the crowd to clear away above. The enormous bulk of the shining machine, the savior of Earth, had attracted a very great amount of attention, naturally, and thousands on thousands of hardy souls had braved the cold of the fifteen mile height with altitude suits or in small ships. Now they cleared away, and as the ship slowly rose, the tremendous concentrated mental well-wishing of the thousands reached the men within the ship. "That," observed Morley, "is one thing cosmium won't stop. In some ways I wish it would--because the mental power that could be wielded by any great number of those highly advanced Thessians, if they know its possibilities, is not a thing to neglect." "I can answer that, terrestrian," thought Zezdon Afthen. "Our instruments show great mental powers, and great ability to concentrate the will in mental processes, but they indicate a very slight development of these abilities. Our race, despite the fact that our mental powers are much less than those of such men as Arcot and yourself, have done, and can do many things your greater minds cannot, for we have learned the direction of the will. We need not fear the will of the Thessians. I feel confident of that!" The ship was in space now, and as Arcot directed it toward Ortol, far far across the Island, he threw on, for the moment, the combined power of space distortion and time fields. Instantly the sun vanished, and when, less than a second later, he cut off the space field, and left only the time, the constellations were instantly recognizable. They were within a dozen light years of Ortol. "Morey, may I ask what you call this machine?" asked Torlos. "You may, but I can't answer," laughed Morey. "We were so anxious to get it going that we didn't name it. Any suggestions?" For a moment none of them made any suggestions, then slowly came Arcot's thoughts, clear and sharp, the thoughts of carefully weighed decision.