The Planetoid of Peril

"With luck, my dear," he whispered aloud. "With luck...."

There was a slight vibration. He threw the gravity bar over to the first notch. Earth dropped, plummet-like, away from him. He pushed the bar to the limit leg; and, at a rate of hundreds of miles a second, was repelled from Earth toward Z-40, and the thing that skulked there.

* * * * *

With a scarcely perceptible jar, he landed on the small sphere that, he hoped, was to be his future home. Before opening his man-hole lid, he went from panel to panel of the Dart and cautiously reconnoitered. He had elected to land beside the little lake that was set like a three hundred-acre gem on the surface of Z-40, and it was more than possible that the enemy had its den nearby.

However, a careful survey of the curved landscape in all directions failed to reveal a glimpse of anything remotely threatening. He donned his oxygen concen