The dogs and the children had found a new victim in the streets below. Anthony's heart went out to him.

"The purpose," continued Colonel Cooper, "was to notice anything just a little bit peculiar in the auras and the persons they represent, anything at all odd in their comings and goings. Anything like what you have come here to report to me."

"Like the seven persons who recently arrived in the world, and not by way of birth?"

"Yes. We have been expecting the first of the aliens for months. We must know their area, and at once. Now tell me."

"What if they are not aliens at all. What if they are restricted persons like myself?"

"Restricted persons have no aura, are not persons, are not alive. And you would not receive knowledge of them."

"Then how do I know the other restricted persons here, Adrian and Wellington, and such?"

"You know them at first hand. You do not know them through the machine. Now tell me the area quickly. The center may be a primary target. It will take the machine hours to ravel it out. Your only purpose is to serve as an intuitive short-cut."

But Tin Man Tony did not speak. He only thought in his mind—more accura............