There was no help for it, Sid had to go. He might have broken away from the professor, but he did not like to try it, for Mr. Tines seemed very determined, and the ensuing tumult would bring into the corridor a throng of students, so that Sid would never hear the last of the joke that had turned on him. He went along quietly, thankful that it was dark, and that no one would see him in the walk across the campus to the proctor's quarters.