“Why, I—I belong here, Professor Tines,” said Sid.

“Belong here? You work on the coal trestle! Don’t tell me! You are covered with coal dust now! What have you there? Are you going to play some trick at the instigation of the freshmen? I demand an answer!”

“I’m Henderson,” went on Sid desperately. “I room here—with Phil Clinton and Tom Parsons.”

“How dare you trifle with me in this fashion?” demanded the irate Latin instructor. “I shall call the proctor and have you arrested!” and he was so much in earnest that Sid, beginning to appreciate the state he was in, determined to prove absolutely that he was himself.

“Professor Tines,” he said, “you can knock on that door there, and ask Clinton and Parsons if I’m not Henderson. I’ve been out after a fox, and I fell in the bog.”

“Ha!” cried the professor. “I see it now. You are trying to play a joke on me, with the aid of Clinton and Parsons. But you shall all three suffer for it! I will knock on that door. I will confront your fellow conspirators with the evidence of their silly act. Come here,” and he placed his hand on Phil’s shoulder and led him toward the room of the three chums. “You shall not trifle with me!” he added fiercely.

Holding Sid firmly by the shoulder with one hand, Professor Tines with the other knocked loudly at the portal. Phil and Tom were within, and the latter quickly opened the door, for the summons was imperative. The two chums in the room started back at the sight of the instructor having in custody the mud-covered figure.

“Young gentlemen,” began the professor sternly, “this—this person asserts that he is Henderson, and that he rooms here. I caught him in the corridor, and at once detected the joke he was about to play. He appealed to me to bring him here for identification. Have you three conspired to play a trick on me? Is this Henderson or is it not?”

Tom and Phil stared at the disreputable figure. They knew at once that it was their chum, but the spirit of mischief entered into Tom. He nudged Phil, and then answered promptly:

“Certainly not, Professor Tines. We don’t know the person!”