Jack passed the find over and Randy examined it.

"I can make it out," said Randy. "R. A. B."

"Robert A. Bangs!" shouted Jack.

"Bob Bangs!" murmured Randy. "Could he have been mean enough to come here and take some of our fish?"

"It certainly looks that way."

"Let us go after him and find out."

"All right. Anyway, we can make him explain how his key ring got here."

Taking what was left of the fish, the two boys hurried back to the rowboat and soon each was seated at an oar and pulling a good stroke in the direction of the town.

"He must have been watching us fish," observed Jack. "And he must have seen us place our catch in the pool."

"And took our best fish because he couldn't catch any of his own," concluded Randy. "Well, if he has my fish he has got to give them up," he added, with determination.