"I'm all right. Where are we?" "Under the sea. Some hidden city of the Second Race--those that were banished. We are prisoners, but honored prisoners it seems." Sine passed his hand over his eyes. "How did we get here?" "Some kind of emanation of theirs--the brightening of that light, I guess. It had a paralyzing effect. I know I froze where I stood, unable to move a step. And I was protected by the hull. Same with Lents. But you had your head out of the port--caught the full effect. It laid you out cold." "They boarded us then," the fat man supplied. "As easy as that! Simply boarded us, herded me and Lents into their own ship, which is just as suitable for navigating in water as in air. As for you, they had to carry you." "Better tell him what to expect," Lents suggested. Kass explained, with considerable scientific interest: "The First Race was not so far wrong in calling them 'terrible people.' They are, a race of monstrosities. Men with four or six arms, men with hair like fur all over their bodies. With heads ten times too large. With boneless tentacles instead of limbs. With scales instead of skin. Quite horrible. And yet, most of them are highly intelligent, with normal human emotions, and painfully conscious of their deformities." "I don't quite understand." Sine was flexing his muscles, sitting up with the support of one elbow. He saw he was lying on a pallet of dried sea weed. "What caused these abnormalities?" "Well, you know--" Lents was speaking judiciously. "You know all about the mutations produced by X-rays in the biological laboratories?" "Of course!" For approximately a million years these actions of X-rays had been understood--their ability to bring about extraordinary mutations in the life-germ, whether animal or vegetable--the acceleration of natural evolution a millionfold. "But you don't mean to say the First Race deliberately brought about these mutations in the Mugs?" "Not deliberately. But they permitted it with utter callousness. You know those hydrogen integrators we saw at a distance in the dark half of The Bubble. Those things are the source of most of the power used by the Jovians. But the generators have a mighty dangerous by-product--the cosmic ray series, for instance, a particularly destructive band below the X-ray spectrum too." Sine nodded comprehension, his eyes hardening as he thought of the grotesque, distorted wreck of humanity who was Proserpina's father. A mere whim of fortune that he had not been condemned to that hell before she was born, or she might have been one of those unfortunate mutations--