"What!" ejaculated the boy, in amazement.

"I say I don't know you. Isn't that plain enough?"

"Well, I know you plain enough. You are the man who roomed with me last night and robbed me."

"'Pon my word, I never saw you before. This is some extraordinary mistake."

"No mistake about it," returned Ralph, doggedly. He was not to be buncombed by the oily manner of the thief.

"Let go of my arm, boy!"

"I will not. You are the thief, and you must return what you stole from me," said Ralph.

He spoke rather loudly, and a crowd began to collect about the two. In a few seconds a policeman hurried up to ascertain the cause of the trouble.