In order to take his mind from thoughts of his thirst and of the immediate future, he rapidly circled the island. As he had expected, it was utterly barren. With shoulders drooping in despair he settled wearily to a seat on the jagged mass of metal high up on top of the meteor. An expression of sudden interest lit up his face. For a second time he felt that particular throbbing, that strange pulsing beneath the surface of the meteor. But now it was far more noticeable than before. It seemed to be directly below him, and very close to the surface. Parkinson could not tell how long he sat there, but from the appearance of the sun, he thought that at the very shortest, an hour passed by while he remained on that spot. And during that time, the throbbing gradually increased until the metal began vibrating under his feet. Suddenly the bacteriologist leaped aside. The vibrating had reached its height, and the meteor seemed to lurch, to tilt at a sharp angle. His leap carried him to firm footing again. And then, his thirst and hopeless position completely forgotten, Parkinson stared in fascination at the amazing spectacle before him. * * * * * An eighteen-foot disc of metal, a perfect circle, seemed to have been cut out of the top of the meteor. While he watched, it began turning slowly, ponderously, and started sinking into the meteor. As it sank, Parkinson fancied that it grew transparent, and gradually vanished into nothingness--but he wasn't sure. A great pit, eighteen feet wide, but far deeper, lay before him in the very place where, not more than ten minutes before, he had stood. Not a moment too soon had he leaped. Motionless he stood there, waiting in tense expectation. What would happen next, he had not the least idea, but he couldn't prevent his imagination from running riot. He hadn't long to wait before his watching was rewarded. A few minutes after the pit appeared, he heard a loud, high-pitched whir coming from the heart of the meteor. As it grew louder, it assumed a higher and still higher key, finally rising above the range of human ears. And at that moment the strange vehicle arose to the surface. A simple-appearing mechanism was the car, consisting of a twelve-foot sphere of the same bronze-like metal that made up the meteor, with a huge wheel, like a bronze cincture, around its middle. It was the whirling of this great wheel that had caused the high-pitched whirring. The entire, strange machine was surrounded by a peculiar green radiance, a radiance that seemed to crackle ominously as the sphere hovered over the mouth of the pit. For a moment the car hung motionless, then it drifted slowly to the surface of the meteor, landing a few feet away from Parkinson. Hastily he drew back from the greenly phosphorescent thing--but not before he had experienced an unpleasant prickling sensation over his entire body.