"Do you remember the noise to which I called your attention early this afternoon"?"
"Yes, sir."
"I will explain it to you now. One of the boys tied a string to a loose lath in the side of the room, and then, having the end of it at his seat, he was pulling it to make a noise to disturb us."
The scholars all looked astonished, and then began to turn round toward one another to see who the offender could be. The culprit began to tremble.
"He did it several times yesterday, and would have gone on doing it had I not spoken about it to-day. Do you think this was wrong or not?"
"Yes, sir;" "Wrong;" "Wrong," are the replies.
"What harm does it do?"
"It interrupts the school."
"Yes. Is there any other harm?"
The boys hesitate.