Of its details, Hawk Carse knew little. They were not of his world. Only for the first half-hour could he follow intelligently what was being done. He too had put on a white robe, as had Ban Wilson and Friday; and he stood at one side of the room, a silent, intently watching figure, with the two other men of action, Ban and the Negro, while the rest moved in a kind of rhythm. The center-piece was the black-garbed Ku Sui, moving from this table to that, slim gloved hands flying, pausing, flying again, steadying, concentrating on a detail, once more sweeping forward. No more than single words came from him; he and his assistants worked almost as a whole, in perfect sympathy and coordination, and a constant stream of instruments flowed to him and then away, their task done. The first table, and then to the second, with one white figure staying behind at the first, finishing off details of the work, left by the master. The third table; the fourth; the fifth; and then back to the first, while two white figures detached themselves from the main group and went to the nearby case of coordinated brains. An object held in a specially formed type of pan was lifted out and carried to the first table; and Carse sensed a crisis in the attitudes of the working men. This, he knew, was the first great, step. A brain was being re-born. The fingers of men, and one man in particular, were fashioning a miracle. How could he hope to understand? He could only hang on the movements of that group of figures, and feel relief as he saw them settle into smoothness again. Evidently the first crisis was past. A few minutes more were spent at the first table; then once more Dr. Ku Sui went to the second, and another object was carried from the coldly gleaming case. And in a long, deep pan standing on short legs beside the case, something gray and shapeless and warm was placed. The first phase came to an end when there were five similar things in the open pan, and nothing, except the liquid and a multitude of spidery, disconnected wires, in the case that but shortly before had harbored the brains of five scientists.... * * * * * A pause. Relaxation. Tests. The black-clad figure spoke to one in yellow in a tone of pleased relief. "Successful so far, Master Leithgow! We may congratulate ourselves on the consummation of the first step. It has been done, I believe, well within the time limit." "Yes, Dr. Ku; yes. And now--how long will be needed to finish?" "That is up to you. Normally, I would require a month. In that time all could be done safely, with small chance--" "Too long!" said Leithgow. Carse intervened: "Why too long, Eliot?" The old scientist went over close to him, and, in a lowered voice, explained: "Ku Sui would develop immunity to the V-27 in a month. Two weeks of it would give him part immunity. Even ten days might. He has to be re-gassed four times a day."