“So there did. It was the officer of the day.”

“What did he want?”

“Not much of anything, only to make sure that you were in bed where you belong.”

“What’s up?”

“Somebody has been running the guard; that’s all.”

“Did they catch him?”

“No; and neither did Henderson recognize him. There’s something mysterious about it. As far as I can learn there is no one missing, and the floor-guards are all willing to swear that nobody has passed in or out of the academy since taps. Good-morning.”

As this was a hint that the sentry did not want to talk any longer, Tom drew in his head and closed the door.

“Now I am beat,” said he, aloud; and so was Duncan who had sat up in bed and heard every word that passed between his room-mate and the sentry. “Gordon was stopped by Dick Henderson, locked out in the cold through your lack of sense, and yet the officer of the day finds him in his room! How does that come? I can’t understand it.”

“Neither can I,” said Duncan. “But, Tom, what made you get so angry at me?”