you operating, Joe--a speakeasy?" "The next time you want in," Joe informed him, "knock on 902 twice, 914 once, and then here four times. We'll let you in. And now, don't say anything too loud." Joe put a finger to his lips and winked broadly. "Even the walls listen," he said in a stage whisper. He led Channing into the room and put on the light. There was a flurry of people who tried to hide their glasses under the table. "Never mind," called Joe. "It's only Dr. Channing." The room relaxed. "I want something stiff," Channing told Joe. "I've just gone three rounds with His Nibs and came out cold." Some people within earshot asked about it. Channing explained what had transpired. The people seemed satisfied that Channing had done his best for them. The room relaxed into routine. The signal knock came on the door and was opened to admit Walt Franks and Arden Westland. Franks looked as though he had been given a stiff workout in a cement mixer. "Scotch," said Arden. "And a glass of brew for the lady." "What happened to him?" "He's been trying to keep to Burbank's latest suggestions." "You've been working too hard," Channing chided him gently. "This is the wrong time to mention it, I suppose, but did that beam slippage have anything to do with your condition--or was it vice versa?" "You know that I haven't anything to do with the beam controls personally," said Franks. He straightened up and faced Channing defiantly. "Don't get mad. What was it?" "Mastermind, up there, called me in to see if there were some manner or means of tightening the beam. I told him, sure, we could hold the beam to practically nothing. He asked me why we didn't hold the beam to a parallel and save the dispersed power. He claimed that we could reduce power by two to one if more of it came into the station instead of being smeared all over the firmament. I, foolishly, agreed with him. He's right. You could. But only if everything is immobilized. I've been trying to work out some means of controlling the beam magnetically so that it would compensate for the normal variations due to magnetic influences. So far I've failed.""It can't be done. I know, because I worked on the problem for three years with some of the best brains in the system. To date, it is impossible."

A click attracted their attention. It was the pneumatic tube. A cylinder dropped out of the tube, and Joe opened it and handed the enclosed paper to Franks.

He read: "WALT: I'M SENDING THIS TO YOU AT JOE'S BECAUSE I KNOW THAT IS WHERE YOU ARE AND I THINK YOU SHOULD GET THIS REAL QUICK. JEANNE S."

Walt smiled wearily and said: "A good secretary is a thing of beauty. A 

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