thank the Lord, and that brought me round.

"Come to think of it, why not crack the suit and breath fresh air instead of bottled?

"No. I'd have to get up to do that. I think I'll just lie here a little bit longer and get properly rested up before I try anything big like standing up.

"I was telling about the return journey, wasn't I? The long jump back home, which should have dumped us between the orbits of Earth and Mars. Instead of which, when James took his finger off the button, the mass-detector showed nothing except the noise-level of the universe.

"We were out in that no place for a day. We astronomers had to establish our exact position relative to the solar system. The crew had to find out exactly what went wrong. The physicists had to make mystic passes in front of meters and mutter about residual folds in stress-free space. Our task was easy, because we were about half a light-year from the sun. The crew's job was also easy: they found what went wrong in less than half an hour.

"It still seems incredible. To program the ship for a star-jump, you merely told it where you were and where you wanted to go. In practical terms, that entailed first a series of exact measurements which had to be translated into the somewhat abstruse co-ordinate system we used based on the topological order of mass-points in the galaxy. Then you cut a tape on the computer and hit the button. Nothing was wrong with the computer. Nothing was wrong with the engines. We'd hit the right button and we'd gone to the place we'd aimed for. All we'd done was aim for the wrong place. It hurts me to tell you this and I'm just attached personnel with no space-flight tradition. In practical terms, one highly trained crew member had punched a wrong pattern of holes on the tape. Another equally skilled had failed to notice this when reading back. A childish error, highly improbable; twice repeated, thus squaring the improbability. Incredible, but that's what happened.

"Anyway, we took good care with the next lot of measurements. That's why we were out there so long. They were cross-checked about five times. I got sick so I climbed into a spacesuit and went outside and took some photographs of the Sun which I hoped would help to determine hydrogen density in the outer regions. When I got back everything was ready. We disposed ourselves about the control room and relaxed for all we were worth. We were all praying that this time nothing would go wrong, and all looking forward to seeing Earth again after four months subjective time away, except for Charley, who was still chuckling and shaking his head, and Captain James who was glaring at Charley and obviously wishing human dignity permitted him to tear Charley limb from limb. Then James pressed the button.

"Everything twanged like a bowstring. I felt myself turned inside out, passed through a small sieve, and poured back into shape. The entire bow wall-screen was full of Earth. Something was wrong all right, and this time it was much, much worse. We'd come out of the jump about two hundred miles above the Pacific, pointed straight down, traveling at a relative speed of about two thousand miles an hour.

"It was a fantastic situation. Here was the Whale, the most powerful ship ever built, which could cover fifty light-years in a subjective time of one second, and it was helpless. For, as of course you know, the star-drive couldn't be used again for at least two hours.

"The Whale also had ion rockets of course, the standard deuterium-fusion thing with direct conversion. As again you know, this is good for interplanetary flight because you can run it continuously and it has extremely high exhaust velocity. But in our situation it was no good because it has rather a low thrust. It would have taken more time than we had to deflect us enough to avoid a smash. We had five minutes to abandon ship.

"James got us all into the Minnow at a dead run. There was no time to take anything at all except the clothes we stood in. The