Roy’s advice prevailed. After a while their good-humor returned and they found the laughable side of the adventure.

“Dick’s a cute one, all right,” said Chub admiringly.

“He surely is,” said Roy. “It isn’t many fellows could fool Sherlock Holmes and Vidocq at the same time!”

“We’re a nice pair of detectives,” laughed Chub. “But we’ve got to get even with him somehow, Roy, and we’re going to do it.”

“I say, let’s tell Harry about it. She’s got bully ideas—for a girl. Maybe she can suggest something. What do you say?”

“All right. We’ll do it as soon as we get back.”

They had a pretty good time of it until after eleven; went through the stamping works and saw them make tin cans and boxes, walked out on the bridge a way, Roy standing treat for the tolls, and ended up at the saw-mill. And it was at the latter place that they found their first clue.

They were sitting on a pile of new boards, basking lazily in the sunlight and watching the big band-saw eating its way through the logs, when one of the men came by and saw them.

“Hello,” he said, “want to buy anything?”