"He's boss of this project," Ritchie said. "He's the one who persuaded them to set up a breeding-center. You're his guinea pig."

"But why all the secrecy?"

"That's what I wanted to know. That's why I scurried around, pulled strings to get a lab technician's job here. It wasn't easy, believe me. The whole deal is being kept strictly under wraps until Leffingwell's experiments prove out. They realized right away that it would be fatal to use volunteers for the experiments—they'd be bound to talk, there'd be leaks. And of course, they anticipated some awkward results at first, until the technique is refined and perfected. Well, they were right on that score. I've seen some of their failures." Ritchie shuddered. "Any volunteer—any military man, government employee or even a so-called dedicated scientist who broke away would spread enough rumors about what was going on to kill the entire project. That's why they decided to use mental patients for subjects. God knows, they had millions to choose from, but they were very particular. You're a rare specimen, Collins."

"How so?"

"Because you happen to fit all their specifications. You're young, in good physical condition. Unlike ninety percent of the population, you don't even wear contact lenses, do you? And your aberration was temporary, easily removed by removing you from the tension-sources which created it. You have no family ties, no close friends, to question your absence. That's why you were chosen—one of the two hundred."

"Two hundred? But there's only a dozen others here now."

"A dozen males, yes. You're forgetting the females. Must be about fifty or sixty in the other building."

"But if you're talking about someone like Sue, she's a nurse—"

Ritchie shook his head. "That's what she was told to say. Actually, she's a patient, too. They're all patients. Twelve men and sixty women, at the moment. Originally, about thirty men and a hundred and seventy women."

"What happened to the others?"