After he had closed the door the boys sat talking over the events of the day. They were agreed that the day had been a most strenuous one and that a little sleep would be welcomed. As they prepared to lie on the floor for what rest they might get, Harry gave vent to a chuckle of laughter. Arnold was all attention.
"What is it, Harry?" he queried. "What's the joke?"
"If that man only knew what he had been missing, he wouldn't have gone away so cheerfully," replied Harry with another chuckle.
"I don't seem to get you," declared Arnold. "I think you might tell--" He paused. "What was that noise?" he asked.
"I didn't hear any noise," replied Harry sitting up.
Through the wall came the plaintive cry, "Bob, Bob White."