Five hundred miles above the sun-mirroring Pacific Ocean, Dollard wiped great beads of perspiration from his shiny jowls. His thick hands tugged and wrestled with stubborn knobs that finally yielded, enabling him to apply greater thrust to his stern rockets. From the moment of take-off, it had seemed to him that the grim bowl of Terra below him was taking a bigger bite out of his acceleration than it should. Naturally, he hadn't expected his craft to operate with one hundred per cent efficiency, considering the caliber of the technical help employed on its refitting; but still, his _tau_ curve should have brought him to his first coasting point four or five minutes earlier. By virtue of being his own pilot, he was obliged to astrogate by rule-of-thumb and occasional directive spurts from the course-calculator. If mechanical troubles piled on top of him now, he'd have to surrender control to his gyromatic pilot, while he moved aft to track down the power-robbing malfunction. No mean task, armed in this case only with a slide rule and what engineering knowledge remained to him after thirty years of high finance. Whatever the gremlin was, it wasn't exactly an auspicious start for a fifty million-mile hop. He grunted and pressed his secondary firing buttons, boosting space velocity by a percentage that should shake the kinks out. At the four thousand-mile mark, the earth had retreated to a green ball that floated atop a stream of unbearably bright stars. From this height above the planet's surface, not even the most powerful telescope would have revealed the scenes of rampant disease and flaming destruction being enacted on the broad continents below. The entire vessel shook in a kind of bone-cracking vibration, lurching and lumbering as if some malign influence had tampered with every rivet and seam-weld in her plates. More apprehensive than ever, Dollard finally yielded to his fears and surrendered his controls to the robot pilot. His huge body rendered almost weightless, he pulled himself along the rail guards of a catwalk that led to the unmanned engine room. Here he inspected every instrument dial to be found although the readings on many of them were repeated on duplicates in the bow. It was then, while the ship was still a thousand miles from the no-pull point where free-wheeling alone had been known to carry vessels out of Terra's gravitational range and into Venus' orbit, that disaster struck. The fuel being fed to exactly half of the rocket tubes choked out, and the blast from the remaining tubes increased proportionately.