Instantly a murderous fury possessed him. He whirled on Barter, to scream out at the man, to beg him to explain what had happened, why this ghastly hallucination gripped him. But all he could do was bellow, and smash his mighty chest with his fists, so that the sound went crashing out across the jungle--to be answered almost at once by the drumming of other mighty anthropoids outside, beyond the clearing which held the awful cabin of Caleb Barter. He started toward Barter, still bellowing and beating his chest. His one desire was to clutch the scientist and tear him limb from limb, and he knew that his mighty arms were capable of ripping the scientist apart as though Barter had been a fly. "Back, you fool!" snarled Barter. "Back, I say!" The long lash of the whip cracked like a revolver shot, and the lash curled about the chest and neck of Bentley. It ripped and tore like a hot iron. It struck again and again. Bentley could not stand the awful beating the scientist was giving him. In spite of all his power he found himself being forced back and back. * * * * * He stepped into the cage, cowered back against its side. Barter darted in close, shut the door and fastened it. Then he stood against the bars, grinning. "Nod your head if you can understand me, Bentley," he said. Bentley nodded. "I told you I would yet prove to the world the greatness of Caleb Barter," said the scientist. "And you will bear witness that what I have to tell is true. Would you like to know what I have done?" Again, slowly and laboriously, Bentley nodded his shaggy head. Barter grinned. "Wonderful!" he said. "You see, you are now Manape. Yesterday you had the brain of a black man, and to exchange your brain with Manape's of yesterday would not have served my purpose in the least. So I had to find an ape of more than average intelligence. That's why I spent so much time in the jungle yesterday. I needed a brain to put in the body of Lee Bentley's--an ape's brain. Your body is a healthy one and I did not think it would die as the savage's did. I was right. It is doing splendidly. It would interest you to see how your body behaves with an ape's brain to direct it. Your other self, whom I call Apeman, is unusually handsome. Miss Estabrook, however, who does not know what has happened, has taken a strange dislike to the other you! Splendid! I shall study reactions at first hand that will astound the world! "But remember, whatever your fine brain dictates that you do, don't ever forget that I am the only living person who can put you to rights again--and if I die before that happens, you will continue on, till you die, as Manape!" * * * * * Barter stopped there. Bentley stiffened. From the room where he knew Ellen Estabrook to be came her voice, raised high in a shout of fear.