He was well in the center of the cavity when the soft ground beneath him gave way suddenly and he catapulted below into the darkness. Through the Stygian gloom he fell in what seemed to be an endless drop. He finally crashed upon something hard. The thin crust of the volcano's mouth had broken through, precipitating him into the deep, hollow interior. It must have been a long ways to fall--or so it had seemed. Why was he not knocked senseless or killed? Then he felt himself over with three tentacles. His metal legs were four broken, twisted masses of metal, while the lower half of his cubic body was jammed out of shape and split. He could not move, and half of his six tentacles were paralyzed. How would he ever get out of there? he wondered. The machine men of Zor might never find him. What would happen to him, then? He would remain in this deathless, monotonous state forever in the black hole of the volcano's interior unable to move. What a horrible thought! He could not starve to death; eating was unknown among the Zoromes, the machines requiring no food. He could not even commit suicide. The only way for him to die would be to smash the strong metal head, and in his present immovable condition, this was impossible. It suddenly occurred to him to radiate thoughts for help. Would the Zoromes receive his messages? He wondered how far the telepathic messages would carry. He concentrated the powers of his mind upon the call for help, and repeatedly stated his position and plight. He then left his mind clear to receive the thought answers of the Zoromes. He received none. Again he tried. Still he received no welcoming answer. Professor Jameson became dejected. * * * * * It was hopeless. The telepathic messages had not reached the machine men of Zor. They were too far away, just as one person may be out of earshot of another's voice. He was doomed to a terrible fate of existence! It were better that his rocket had never been found. He wished that the Zoromes had destroyed him instead of bringing him back to life--back to this! His thoughts were suddenly broken in upon. "We're coming!" "Don't give up hope!" If the professor's machine body had been equipped with a heart, it would have sung for joy at these welcome thought impressions. A short time later there appeared in the ragged break of the volcano's mouth, where he had fallen through, the metal head of one of the machine men. "We shall have you out of there soon," he said. * * * * * The professor never knew how they managed it for he lost consciousness under some strange ray of light they projected down upon him in his prison. When he came to consciousness once more, it was to find himself inside the space ship. "If you had fallen and had smashed your head, it would have been all over with you," were the first thought impulses which greeted him. "As it is, however, we can fix you up first rate."