The ape nodded, and then, very laboriously: “I will not harm you.” At a sign from Ras Thavas the attendants removed the bonds and the creature sat up. It stretched its limbs and slid easily to the floor, where it stood erect upon two feet, which was not surprising, since the white ape goes more often upon two feet than six; a fact of which I was not cognizant at the time, but which Ras Thavas explained to me later in commenting upon the fact that the human subject had gone upon all fours, which, to Ras Thavas, indicated a reversion to type in the fractional ape-brain transplanted to the human skull. Ras Thavas examined the subject at considerable length and then resumed his examination of the human subject which continued to evince more simian characteristics than human, though it spoke more easily than the ape, because, undoubtedly, of its more perfect vocal organs. It was only by exerting the closest attention that the diction of the ape became understandable at all. “There is nothing remarkable about these subjects,” said Ras Thavas, after devoting half a day to them. “They bear out what I had already determined years ago in the transplanting of entire brains; that the act of transplanting stimulates growth and activity of brain cells. You will note that in each subject the transplanted portions of the brains are more active—they, in a considerable measure, control. That is why we have the human subject displaying distinctly simian characteristics, while the ape behaves in a more human manner; though if longer and closer observation were desirable you would doubtless find that each reverted at times to his own nature—that is the ape would be more wholly an ape and the human more manlike—but it is not worth the time, of which I have already given too much to a rather unprofitable forenoon. I shall leave you now to restore the subjects to anaesthesia while I return to the laboratories above. The attendants will remain here to assist you, if required.” The ape, who had been an interested listener, now stepped forward. “Oh, please, I pray you,” it mumbled, “do not again condemn me to these horrid shelves. I recall the day that I was brought here securely bound, and though I have no recollection of what has transpired since I can but guess from the appearance of my own skin and that of these dusty corpses that I have lain here long. I beg that you will permit me to live and either restore me to my fellows or allow me to serve in some capacity in this establishment, of which I saw something between the time of my capture and the day that I was carried into this laboratory, bound and helpless, to one of your cold, ersite slabs.” Ras Thavas made a gesture of impatience. “Nonsense!” he cried. “You are better off here, where you can be preserved in the interests of science.” “Accede to his request,” I begged, “and I will myself take over all responsibility for him while I profit by the study that he will afford me.”