“Thank you very much, Colonel Colby,” cried Jack, and, starting forward, he offered his hand, and the master of the school shook it warmly. Then all of the other cadets came forward to do likewise.

“I hope you won’t punish those other fellows for getting some extra food up to us,” said Fred, as he and Andy brought out the hidden things and placed them on one of the trays. “They only tried to do us a good turn.”

“You may rest assured, Rover, that I shall treat them only as they deserve,” answered Colonel Colby, and led the way downstairs. Here the cadets separated, each to pay a brief visit to his own room before going down to the classrooms on the lower floor.

“I wonder what Colonel Colby meant when he said Duke had reasons for being irritable?” remarked Randy.

“I don’t know, I’m sure,” answered Jack thoughtfully.

“Maybe he’s suffering from some sickness,” suggested Fred. “Perhaps he ought to have an operation and hates to have it done.”

“Maybe he’s worried about money matters,” came from Randy.

“It was certainly something worth while or Colonel Colby wouldn’t have been so serious about it,” said Fred. “Gee! I’m sorry if I misjudged him, if there is really something wrong.”

“I don’t believe Colonel Colby would caution us if it wasn’t so,” said Jack. “And after this I’m going to give Duke as much consideration as I possibly can.”

The boys had been told to go to their classrooms, but this was hardly necessary, for they had just about presented themselves when the afternoon session of the school came to an end. Then they followed some of their friends down to the gymnasium, where they were at once surrounded and asked to give the particulars of what had happened to them.