"Joseph! You're hurting!"
"What do you mean, 'the man who bought your X-ray glasses'?" The professor thrust his gaunt face to within an inch of Henry's, his eyes like steel gimlets. "If you tell me you've sold those glasses, you misbegotten moron—"
"But Joseph!" Henry struggled to free himself. "You told me to get rid of them. You warned me not to use them."
"I never told you to sell them! You knew I wanted to talk to Coggleston about their use to the army—"
"Yes, but you didn't tell me not to sell them. And I had all my notes, and knew just how to make another pair, and so when the red-headed man offered me fifty dollars for them—"
But Professor Paulsen had ceased to listen. Already he was on the telephone and calling Major Coggleston. Tersely he explained the situation.
Then:
"Could he have gotten the formula, Ray? Was it anywhere he could see it through those devil's glasses?" And, a moment later: "Oh. Coggleston, I can't tell you how sorry I am—"
"What did he say?" Henry demanded excitedly as the other hung up. "Is it all right, Joseph—"
"No." The scientist shook his head, eyes dark with worry. "Coggleston says we can be practically certain the spy got that formula. He says the man in charge was having a staff meeting of his aides, and they had it written out on a blackboard for discussion."