"All right, chief," said Ben, when they were installed. "What do we do first?"

"Figure out some kind of armor that will stand off whatever kind of ray they pop up with, I guess," offered Sherman.

"May I stick my two cents in?" said Murray Lee. "I don't think that any kind of armor is going to do a lot of good. For one thing, you don't know what the Lassans are going to produce. Those tanks we had were armored against the best kind of shells, and the Lassans turned up with the light-ray that made them look like Swiss cheese. It's your show, but if I were fishing for something, it would be a way to sock those guys. In this kind of war, the man that gets in the first punch is going to beat."

"That light-ray of theirs is pretty good," said Ben. "From what you know about it already, you ought to be able to dope out a pretty good heat ray."

"No soap," said Sherman. "Too slow. They'll be all set for that, anyway. It's right along the line they think. No, what we've got to have is something along a new line, and I'm thinking it can't be anything like a gun, either. They're onto that now." He closed the door to the inner office with a bang.

"By the way," asked Gloria, "why don't the Australians send some airplanes up there to the Catskills and shoot up the Lassan headquarters?"

"Didn't you know?" asked Ben. "They tried it. They dumped about a hundred tons of explosives all over the joint, and it might have been so much mud for all the good it did. Then they ran a railroad gun up there and tried to shell the door, but that wasn't any good, either. They've got a signal station up there watching, waiting for them to come out, and we'll just have to wait for that. Sherman"—he indicated the door behind which the aviator had retired—"is nearly bughouse. They've got his girl a prisoner in there."

"Tough break," commented Gloria. "Wish I could do something for the lady."

They talked about minor matters for a time, Ben speaking absently and cudgeling his brains for a line on which to work toward the new weapon. It is not easy to sit down and plan out a new invention without anything to start on beyond the desire to have it.

Suddenly, the inner door was flung open. In the aperture they saw Sherman, his face grinning, a small piece of metal in his hand.