save a world."

* * * * *

Silence greeted his outburst. The scratching of a match as June lit a
cigarette sounded like an explosion. Then the smoke eddied undisturbed
while the three stared vacantly into space, trying to think.

"Couldn't we"--the girl swallowed hesitantly as she realized her
ignorance of radio engineering--"couldn't we interfere with that wave?
Interfere with the wave which already is breaking up the thought
waves. Cancel its power. Oh, Jack, you must know what I mean."

"With this dinky, five-kilowatt station? We couldn't reach Yonkers
against the power they've got. By Jove!" He leaped to his feet as a
new thought struck him. "Maybe we could just wake up New York. Get
help from the police then! Smash that other station afterwards!"

"But we don't know whether interference would break the spell,"
interposed the practical doctor. "And it will take a lot of practise
to follow that wave. It jumps back and forth like a grasshopper."

"And if we don't do it right the first time, whoever is operating that
station will be down on us like a ton of brick," admitted Jack.

"Let's get the child we saved," suggested June. "We can bring her up
here. Then we'll need only a little power, just enough to be effective
in this room, to bring her to life if we can. They wouldn't hear our
wave."

"Great!" Jack bent over and kissed her. "You're a real help. I'll be
back in a minute." He dashed out. Soon they heard his step on the
stairs and he reappeared, tenderly bearing his golden-haired burden.

"Now, June," he commanded briskly, "place her in a comfortable
position on the work table while I get ready." He began arranging
equipment and connecting it with the bank of storage batteries.

"Shall I adjust a headset for her?" asked the impatient doctor.

"Be yourself!" Jack placed a crooked vacuum tube near the child's head
and clamped two flat electrodes on her temples. "This wave must act
directly on the brain. The sense of hearing has nothing to do with it.

"All right, Sleeping Beauty." He stretched the kinks out of his aching
back. "Let's see what we can do for you. Pardon me, Doctor, if I
seemed rude. This is ticklish work. Pick up the outside wave for me.
Thanks. Now I've got our dinky sending station set on the same wave
length at a different frequency. It's adjusted so that as I keep in
touch through this tuning coil, our wave will fluctuate over the same
path as the other