Over his own head and shoulders Seaton draped a finely woven screen of silvery metal, connected by a stranded cable to a plug in his board; and after he had similarly invested his companions he began to manipulate dials and knobs. As he did so the dark space of the cabinet became filled with a soft glow of light--a glow which resolved itself into color and form, a three-dimensional picture. In the background towered a snow-capped, beautifully symmetrical volcanic mountain; in the foreground were to be seen cherry trees in full bloom surrounding a small structure of unmistakable architecture; and through their minds swept fleeting flashes of poignant longing, amounting almost to nostalgia. "Good heavens, Dick, what have you done now?" Dorothy broke out. "I feel so homesick that I want to cry--and I don't care a bit whether I ever see Japan again or not!" "These nets aren't perfect insulators, of course, even though I've got them grounded. There's some leakage. They'd have to be solid to stop all radiation. Leaks both ways, of course, so we're interfering with the picture a little, too; but there's some outside interference that I can't discover yet." Seaton thought aloud, rather than explained, as he shut off the power. "Folks, we _have_ got something! That's the sixth-order pattern, and _thought_ is in that level! Those were _thoughts_--Shiro's thoughts." "But he's asleep, surely, by this time," Dorothy protested. "Sure he is, or he wouldn't be thinking that kind of thoughts. It's his subconscious--he's contented enough when he's awake." "How did you work it out?" asked Crane. "You said, yourself, that it might well take lifetimes of research." "It would, ordinarily. Partly a hunch, partly dumb luck, but mostly a combination of two brains that upon Norlamin would ordinarily never touch the same subject anywhere. Rovol, who knows everything there is to be known about rays, and Drasnik, probably the greatest authority upon the mind that ever lived, both gave me a good share of their knowledge; and the combination turned out to be hot stuff, particularly in connection with this fifth-order keyboard. Now we can really do something!" "But you had a sixth-order detector before," Margaret put in. "Why didn't we touch it off by thinking?" "Too coarse--I see that, now. It wouldn't react to the extremely slight power of a thought-wave; only to the powerful impulses from a bar or from cosmic radiation. But I can build one now that will react to thought, and I'm going to; particularly since there was a little interference on that picture that I couldn't quite account for." He turned back to the projector. "You're coming to bed," declared Dorothy with finality. "You've done enough for one day."