"At any rate," Frobisher continued, "we are working on that latter supposition here. This copper structure is a parabolic mirror. Thought waves originating at its focus are concentrated into a beam which is directed upward into the sky toward any stellar planetary systems which may happen to lie above."
"Amazing," da Silva grunted. "Explains everything."
"What do you mean?" Frobisher asked sharply.
"Just humble before wonders of science," da Silva told him.
Frobisher nodded. "You're right," he said. "Who knows but what the message now being beamed, with its appeal for help from a war-threatened and deluded humanity, may some day or century be received by a truly mature and benign race, which will swiftly come to our aid? By the by, Mr. Gish, watch that railing. It's broken."
Phil jerked his hand away from the rusted pipe. "Yes," he said to Frobisher, "but how do these thought waves originate at the focus?"
"Just look," Frobisher told him. Phil squintingly studied the gleaming saucer through his dark glasses and it became less of a jumble of highlights. Projecting from a hole in the center of the bowl was a brownish-red blob wearing goggles that looked as if they were made of a darker glass than his own specs. The blob's lips moved and Phil heard a hauntingly familiar voice saying, of all things, "S-O-S, earth. S-O-S, earth."
"Our star esper," Frobisher chortled, "if you'll pardon a pun of which we're rather fond. To be sure, it's thought waves, not sound waves, he's originating, but it helps him esp if he says the message at the same time he thinks of it. He's a bit of an eccentric—a religious scholar—but that's the case with most of our best people."
At that moment Phil's vision, buffered by the dark glasses, became quite clear and he saw that the sweating head at the focus of the parabolic mirror was that of Sacheverell Akeley. At the same moment Sacheverell saw Phil and his sun-burned top disappeared from the saucer as swiftly as a hand puppet jerked below stage.
"He shouldn't do that," Frobisher said sharply. "There's at least twenty minutes of his duty remaining. Well, I presume you've seen all you'll need for your articles, gentlemen, so we'd best go down."