"Don't touch it," Ketrik warned, "but you'll notice there are two cathodes attached to the temples of my earth body. See how the wires lead out, and up to that panelled board on the wall? There are all kinds of coils and things behind that board. Those other cathodes, that you see dangling, were attached to the brain plate of the robot. I suppose the molecules of your mental self flow through the wires. When the transference is complete, you merely detach the cathodes and start walking about, a full-fledged robot! I tell you it's wonderful!" "Ketrik," Brownell said, as they went back through the forest, "we should be returning to Earth as soon as we complete the new weapon for Man's people. Don't you want to return with us?" "No, I think I'll stay. I want to be sure those Perlacs don't cause any more trouble for a while." "There wouldn't be any other reason?" Mark grinned. "There would and is." The smile was in Ketrik's voice, if not on his metal lips. "I like that golden-haired Amazon--what's her name--Mari?" "But why return at all?" Mari wanted to know, when the Professor announced the plans. "You have said you wanted a base for the manufacture of your Frequency Tuners. What better place than here?" "Thank you, my dear. I had thought of that, but after all this is your world, and we are intruders." Mari was hurt. "After all that you've done for us? And you can do so much more!" "Then rest assured we'll be back, possibly within a month. True, there is much to be done here but we need new supplies, tools, equipment of every sort." Janus said: "And with your permission, we'll want to bring back some new men. Not rogues and adventurers like me, but scientific men who can come here and work out their ideas without fear of that stupid Earth Bureau. Men like Mark, here, and the Professor." Brownell nodded agreement. "I see a new regime. The Tri-Planet Council will have to cooperate with expanding endeavors, or take a back seat. Already I know two men on Earth, and four on Mars, who'll be delighted to come here to carry on their work. And Mark, that reminds me. That new weapon of yours. I think we can ask about it now?" "Oh, it's nothing much, but I wasn't going to let the Bureau have it on their terms! It's merely an advanced frigidation idea. Works along an extended magnetic beam, absorbing all heat in a given area, almost to absolute zero." "And he says it's nothing much!" came from Janus. "It still needs some working out. The coils didn't stand up, the last time I applied it out there." In two more days they were turning out the neutro weapons in quantity. During that time nothing more was seen of the Perlacs, as the robot-Ketrik maintained a vigilance. Brownell made a last check-up of the spaceship, and more important still, he strengthened the Frequency Tuner to counteract the gravity. * * * * *