“Yes. It’s the Coquette,” agreed Wyn.

“What are they doing in there?” asked Frankie. “See! he is standing up and gesticulating–not to us. He’s talking to Polly.”

“That is the place where he had the misfortune to lose Dr. Shelton’s motor boat last winter,” said Wyn. “Don’t you remember?”

“You see,” Dave cried, “he is showing her the place where the limb fell again–and the direction the boat must have taken in the fog.”

“A lot he knows where it went,” said Tubby, scornfully. “He was swept overboard, and as far as he knows the Bright Eyes might have gone right up into the air!”

“But it didn’t explode, you see, nor did it have wings,” laughed Wynifred. “So it took no aërial voyage–we may be sure of that. I’d give anything to find where it sank.”

“So would I, Wyn,” cried Dave. “If we could locate the sunken boat, Mr. Jarley could easily prove he had neither stolen it nor the silver images.”

“I’d give something handsome to have the mystery explained, myself,” said Mr. Lavine, suddenly.

“What would you give, Father?” asked his daughter.

“I’ll tell you,” he replied, smiling. “I understand both of your clubs–the Go-Aheads and the Busters–are anxious to really own a motor boat. Frank Dumont, here, tells me he has got to go home with the Happy Day to-morrow, as his vacation is ended.