As he stepped to the floor, a sudden cry of dismay fell upon his ears. One of the Venerians, coming around the car, had discovered him. Without a moment's hesitation, Parkinson aimed his little weapon, and pressed upon the knob. Like his fellow, the Venerian fell to the floor, a heap of charred ashes. With the second Venerian destroyed, Parkinson dashed around the sphere, metal cylinder held in readiness. The leader of the Venerians was stealing stealthily around the other side of the car, his hand fumbling beneath his garment. "Stop!" Parkinson cried. "Raise your hands above your head--empty!" A cylinder clattered to the metal floor as the Venerian's hands moved skyward. "Keep your back turned!" Parkinson snapped as the invader began about. "I won't hesitate to press on this little knob, at your first hostile move! I'd thoroughly enjoy burning you to a crisp, so be very careful." While talking, Parkinson had moved slowly toward the man from Venus; now, almost upon him, he quickly dropped his weapon into a pocket, and swung a terrible blow at the base of his skull. The Venerian fell to the floor without a groan, unconscious. Parkinson stared at the recumbent figure rather dubiously for a moment. If only he had his other arm! But it was gone; with an impatient shake of his head he stooped and raised the senseless invader. It was anything but an easy task for the bacteriologist to carry his seven-foot burden up the ladder and into the sphere, but finally, he succeeded in doing so. Then, without delay, he lowered the car into the meteor again. As he bore the Venerian from the vehicle, he tried to decide upon his next move. Obviously, he had to secure the one surviving invader, so that he would not be a menace to Parkinson when he revived. And then the logical thing to do would be, in some way, to secure information from him as to how to cure the disease that was spreading over the world. * * * * * The logical thing to do, yes--but how? With only one arm, the simple task of binding the Venerian presented considerable difficulty. How much more difficult would it be to force anything from him? Then the solution of the first problem presented itself to Parkinson. What was to prevent his strapping this being into the high-backed chair to which he had been secured some time before? Quickly he crossed the circular room to the door he had first passed through while searching for a weapon. Ten minutes later, when the Venerian regained his senses, he was fastened securely to the tall, metal chair. "Well," Parkinson addressed him, "conditions seem to be reversed now, and you're the underdog. I've nipped your invasion in the bud. All your elaborate preparations are wasted." Something resembling a sneer wreathed the Venerian's thin lips; a mocking gleam lit his cold, blue eyes.