Mr. Browning laughed, and then he got sober all of a sudden. “What made you think of that? How did you get it into your heads Topper and I were going to dig for something?”

“Well, almost every place we’ve been, you’ve told us about how pirates used to be around, and we thought maybe we might run onto a treasure or something. And there was that black yacht——”

“What about the black yacht?”

“It looked kind of like it might be a pirate.”

“I’ll tell you what I think,” says Mr. Browning, “and that is that you’ve got sharper ears than Topper and I gave you credit for having.”

“Maybe so,” says Catty.

“And you know we’re after something.”

“We’ve got our suspicions.”

“Know what it is?”

“No, sir.”