"What do you make of it, d**k?" asked Crane, slowly.
"No wiring—tight beam transmission. The Fenachrone do it with two matched-frequency separable units. Millions and millions of kilowatts there, if I'm any judge. Absolutely automatic too, or else——" Seaton's voice died away.
"Or else what?" asked Dorothy.
"Just a hunch. I wouldn't wonder if——"
"Hold it, Dicky! Remember I had to put you to bed after that last hunch you had!"
"Here it is, anyway. Mart, what would be the logical line of evolution when the planet has become so old that all the land has been eroded to a level below that of the ocean? You picked us out an old one, all right—so old that there's no land left. Would a highly civilized people revert to fish? That seems like a backward move to me, but what other answer is possi
