The men had taken off their coats, and Rhoda was fanning herself violently. But, even as they watched it, the thermometer began to fall until the instrument registered less than seventy degrees. "Really," exclaimed Rhoda, in admiration, "what a perfect housekeeper you are! You don't happen to have a soda-fountain under that table, do you?" Bennie laughed. "No; that was something I forgot. But I can give you a glass of ice-water if you like." "If you please," she acquiesced. Bennie pulled himself over to the water-cooler, where he held a pitcher under the spigot and opened the cock. But nothing happened. "What's the trouble?" inquired Rhoda. Bennie grinned. "Of course," he answered, "the water won't run out, for there isn't any gravity to make it." He lifted the lid off the cooler and filled the pitcher by scooping up the water. Then he floated back to Rhoda with the remark, "I'll show you an experiment which no one has ever seen before." Holding the pitcher upside down, he lifted it quickly away from the water inside, which remained suspended in the air as a pulsating, transparent mass of irregular form. Gradually the mass ceased its pulsations and, as it did so, collected itself into a perfect sphere resembling a crystal ball. "See what surface-tension will do!" he exclaimed admiringly. "Did you ever see a soap-bubble as beautiful as that?" "How extraordinary!" murmured Rhoda. "Anyhow, it's just what I wanted." And, leaning forward, she applied her lips to the floating sphere and sucked in a deep draft of the icy fluid. "The latest thing in hygienic drinking-fountains," she remarked, as she settled herself back in her armchair. "I really don't need this chair for repose, but without it I feel like a picture without a frame," she added. "This is crazy-house, all right!" nodded Atterbury. "Gee, but we've got to be awful careful or we'll break every bone in our bodies!" "If we can only manage to sit still for an hour," answered Bennie, "we shall have our tractor running again. Just now, I feel like a toy balloon!" At this point, Burke elevated his legs and gave himself a shove with his hands. "So long!" he remarked, as he shot forward, and, floating horizontally through the door of the control-room, disappeared. "Easy way to go to work!" chuckled Atterbury. "Lie on your back and kick yourself down-town. Watch _me_!" He lifted himself with his forearms until he was poised like an athlete above a pair of parallel bars. Then, extending his arms in front of him, he gave a jerk with his legs and swam through the doorway after Burke. Rhoda and Bennie looked at each other in amusement. "Have you thought what is going to happen when we begin to get within the sphere of Medusa's attraction?" she inquired. "You mean that, since that is the direction of our flight, gravitation will lift us _up_ instead of _down_?" "Exactly. We shall have to walk on the ceiling with our heads toward the floor."