Up came Dan's hand in quick salute.
"May I speak, sir?"
"Yes, Mr. Dalzell," replied the officer in charge.
"I remember seeing Mr. Darrin's coat hanging properly on its hook, sir, just before we marched off to math. recitation."
"Did you leave the room, Mr. Dalzell, after Mr. Darrin, or even with him?" questioned Lieutenant Hall.
"No-o, sir. I stepped out just ahead of Mr. Darrin."
"That is all, then, Mr. Dalzell. Mr. Darrin, there is a pair of your shoes. They are in place, but one of them is muddy."
Dave glanced at the shoes uneasily, a flush coming to his face.
"I am certain, sir, that both shoes were in proper condition when
I left to go to the last recitation."
"Then how do you account for the dust-marked dress jacket on the floor, and the muddy shoe, Mr. Darrin?"