"Of course. Just them two."

"Was the plane equipped with wireless?"

"Yes. They spent two days tending to that; seemed to be mighty particular about it."

"Yes, of course they would."

"Eh? What?" the man turned sharply about.

Curlie was silent again.

"It's funny about them wireless rigs for a plane," said the keeper at last. "You git your ground by hanging a wire seventy-five er a hundred feet down from the plane, then you get ground just the same as if the wire was dragging through the sea, don't matter whether you're up a hundred miles or five thousand. Strange stuff, this radio."

"Yes," said Curlie, "it is. By the way," he exclaimed suddenly, "do you know about this new Packard-Prentiss equipment?"

"Yes, sir; was tryin' one out only yesterday. Fine thing."

"Reliable?"