From each cell led tiny insulated wires, so fine as to be almost invisible, to the "nerve centers" and to one of the millions of projectors. From these in turn ran other wires, joining together to form larger and larger strands until finally several hundred enormous cables, each larger than a man's body, reached and merged into an enormous, glittering, hemispherical, mechano-electrical inner brain. For forty long Valeronian days--more than a thousand of our Earthly hours--the work went on ceaselessly, day and night. Then it ceased of itself and there dangled from the center of the glowing, gleaming hemisphere a something which is only very vaguely described by calling it either a heavily wired helmet or an incredibly complex headset. It was to be placed over Seaton's head, it is true--it _was_ a headset, but one raised to the millionth power. It was the energizer and controller of the inner brain, which was in turn the activating agency of that entire cubic mile of as yet inert substance, that assemblage of thousands of billions of cells, so soon to become the most stupendous force for good ever to be conceived by the mind of man. When that headset appeared Seaton donned it and sat motionless. For hour after hour he sat there, his eyes closed, his face white and strained, his entire body eloquent of a concentration so intense as to be a veritable trance. At the end of four hours Dorothy came up resolutely, but Crane waved her back. "This is far and away the most crucial point of the work, Dorothy," he cautioned her gravely. "While I do not think that anything short of physical violence could distract his attention now, it is best not to run any risk of disturbing him. An interruption now would mean that everything would have to be done over again from the beginning." Something over an hour later Seaton opened his eyes, stretched prodigiously, and got up. He was white and trembling, but tremendously relieved and triumphant. "Why, Dick, what have you been doing? You look like a ghost!" Dorothy was now an all solicitous wife. "I've been _thinking_, and if you don't believe that it's hard work you'd better try it some time! 'Sall right, though, I won't have to do it any more--got a machine to do my thinking for me now." "Oh, is it all done?" "Nowhere near, but it's far enough along so that it can finish itself. I've just been telling it what to do." "_Telling_ it! Why, you talk as though it were human!"