life in any approaching space-ship for as many years as the projectors were powered for. But in time, more especially after matter-transmitters had made space-craft useless, they were forgotten. All but those which went into museums for the instruction of the young.

These resuscitated weapons were now at work to find and kill Kim and Dona. In a sense it was like trying to kill flies with a sixteen-inch gun. The difficulties of aiming were extreme. To set up a detector-field and neutralize it would take time and skill which were not available.

So the beams swept through great arcs, with operators watching for signs of contact. It was long minutes after the first contact before the instruments on the projectors recorded it, because the news could only go back at the speed of light. Then the projectors had to retrace their path, and the "Starshine" had moved. The beams had to fumble blindly for the fugitives, and they told of each touch, but only after it occurred. And Kim struggled to make his course unpredictable.

In ten hours the beam struck four times only, because Kim changed course and acceleration so fiercely and so frequently that a contact could only be a matter of chance.

Then for a long time there was no touch at all. In two days Alphin, the sun, had dwindled until it was merely the brightest of the stars, with a barely perceptible disk. On the third day the beam found them yet again, and Dona burst into hysterical sobs. But it was not really bad, this time. There is a limit to the distance to which a tight beam can be held together in space, by technicians who have not space-experience and instinctive know-how.

Within hours after this fifth contact, Kim Rendell found the last key break in the control-cables of the ship, and was able to throw on the overdrive, by which the "Starshine" fled from Alphin at two hundred times the speed of light. Then, of course, they were safe. Even had the beam of agony been trained directly upon the ship, it could not have overtaken them.

But Dona was a bundle of shrinking nerves when it was over, and Kim raged as he looked at her scared eyes.

"I know," she said unsteadily, when he had her in the control-room to look at the cosmos as it appeared at faster-than-light speed. "I know I'm silly, Kim. It can't hurt us any more. We're going to another solar system entirely. They won't know anything about us. We're all right. Quite all right. But I'm just all in little pieces."

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