“Oh, nothing,” said Ben, recovering himself.

“Yes, there was.”

Ben moved from foot to foot, sizing up the situation. The cause of his sharp ejaculation was the discovery on his part of an odd looking pin or badge on the lapel of the man’s coat.

It was an exact counterpart of the one Ben had found in the work shed at home. Our hero reflected rapidly. Then, without attracting the attention of the man to what he was doing, he turned sideways. He got the pin out of his pocket and managed to attach it to his coat. Then he faced the man.

“Aha!” exclaimed the second-hand dealer, fixing his eyes on the pin.

CHAPTER XV

A MEAN ENEMY

Ben saw at once that the sight of the pin had produced a great effect on the second-hand dealer. He prepared to take advantage of it.

“Why didn’t you say so at first?” inquired the store keeper.

“Say what?” inquired Ben.