"It is from somebody's trousers," said Jack, seriously. "Whoever the sneak was, he'll have to buy a new pair. He hit Prince a frightful blow behind the ear, but the good old fellow held fast to this trophy."

"If we'd nabbed the fellow, we wouldn't have done a thing to him—not a thing!" cried Griswold.

"See if any of you fellows recognize this piece of cloth as belonging to the clothing of any chap you know," invited Diamond.

They all examined it.

"If I mistake not," said Dismal Jones, "this came from a certain section of a certain individual's trousers, and the section to which I refer is located about eight inches south of the back strap."

"And the fellow," exclaimed Robinson, "the fellow is——"

"Roland Ditson!" finished Rattleton.

"In that case," said Diamond, "Merriwell's enemies have received a good tip concerning his fondness for Nemo. You will have to be doubly careful about that horse after this, Frank."