“We must certainly locate the party or parties who are guilty,” said the captain. “Mr. Strong, have you any especial enemies among the students?”

“I think not, captain.”

“Have you had occasion to reprimand any of them, or keep them in after regular hours?”

“Oh, yes, I have kept some of them in.”

“Who?”

The teacher named over seven or eight, among them being Reff Ritter, Dan Baxter, and Gus Coulter.

“Any others?”

“I once had to keep in Dale Blackmore and Andy Snow for talking together. But I do not think they can be guilty.”

“Perhaps not, although Snow is rather full of fun.”

The matter was talked over and the teacher said he would watch the boys he had mentioned closely.