"Ain't half as many as there used to be," remarked Pinkey. "When the craze was on we had about a hundred an' fifty. It's all automobiling now."
The boys looked over the various wheels and felt of the working parts and the lamps. Presently Sam found a hot lamp and Dick located another.
"Who do these machines belong to?" asked Dick.
"There's the list," said the watchman, pointing to a written sheet tacked on the wall "They are No. 15 and No. 9."
The boys looked at the sheet, and read the names of Walter D. Flood and Andrew W. Crossley, two juniors, whom they knew by sight only.
"They wouldn't play this trick on us," whispered Dick to his brothers.
"They must have loaned their bicycles to others."
"Right you are," answered Tom. "We'll have to question them."
"Do you know where they room?"
"No; but we can find out from the register."
They entered their dormitory and found out that Flood and Crossley were in the next building, occupying Room 14 together.