"Naturally. And experiments have been made. Physical conditioning, systems of exercise, experimentation in chemotherapy are still being undertaken. There's no lack of volunteers, but a great lack of results. No, the answer does not lie in that direction."

"But what else is there?"

"That is what I had hoped you might tell me," Thurmon said. "You are a scholar. You know the past. You speak often of the lessons of history—"

Littlejohn was nodding, but not in agreement. He was trying to comprehend. For suddenly the conviction came to him clearly; Thurmon was right. It was happening, had happened, right under their smug noses. The world was weakening. It was slowing down, and the race is only to the swift.

He cursed himself for his habit of thinking in platitudes and quotations, but long years of study had unfitted him for less prosaic phraseology. If he could only be practical.

Practical.

"Thurmon," he said. "There is a way. A way so obvious, we've all overlooked it—passed right over it."

"And that is—?"

"Stop the Leffingwell injections!"

"But—"