“What’s the matter?” queried that young gentleman, sitting up and peering into the darkness.

“I don’t know,” whispered Billie, “but it sounds as though some one were trying to get in.”

“Where?”

“That’s what I can’t make out.”

Adrian pulled his saddle-bag toward him and took out his electric torch. Slowly he pointed it in

every direction, but he could see nothing unusual, although the strange noise continued.

“Funny, isn’t it?” he said, and then he arose to his feet.

As he did so, Billie glanced up at the speaker, and what he saw caused a broad grin to overspread his rotund countenance.

“Look!” he exclaimed, and pointed toward the roof.

Adrian did as he was told, and burst into a hearty laugh, which aroused Donald.