"I took amnesiac men and women from the space hospitals and gave them a new life. I let them build a new civilization for themselves, a new life. Where they would have had to spend the rest of their useless lives in sanatoriums, I gave them freedom, fresh air and a new world. Was that wrong?"

Grim said dryly, "Not the way you put it. But you could have established dams—something to keep that hellish force in place. And while we're on it—what in the name of the Empire is the thing?"

Jasper Jones waved at the machine. "Let's go inside. I'll tell you about it as we go. Come, Tlokine.

"I said I was interested in sound. Perhaps I should say, vibratory impulses. You know Tyndal's experiments—sand figures on a vibrating plate, the motion of the plate along a nodal line. The sand on the plate rearranges and groups itself into regular patterns. Some of them are beautiful."

"You mean the method devised by Chladni? Where sand is put on a thin metal plate and a violin bow is scraped across its side?"

"Exactly. The sand is tossed away from the vibrating sections of the plate. It collects in areas of calm, undisturbed by the vibrations."

"You mean to tell me that's what this entire planet is—a vibrating plate?" wondered Grim.

"A hundred years or more after Chladni, Dr. Fredericka Blankner advanced the theory that all life, all matter in the universe, followed a pattern somewhat similar to the dancing sands on a Chladni plate. Even human bodies vibrate at a certain impulse.

"I studied for years on that theory. Then when I found this planet, I fitted it out during my vacations. When I retired and brought the spaceshock cases here—I was ready to follow and prove those theories."

A deep, sullen roar grew into a thundering volcano of sound, beyond the Temple gateway. Grim cried, "Althaya and her people. They've come to learn your secret, Jones. Quick, man—some weapons! We can hold them off easily enough if—"