"Now I am not going to ask you to tell tales against your companions. I don't believe in that sort of thing. But I am very sorry that you did not admit at first that you had a share in rolling the big ball. Very sorry, Bert."
"But, Mr. Tetlow, I didn't do it!" cried poor Bert, the tears coming into his eyes. "I don't know how my knife got there, but I do know I didn't help roll that ball. Please believe me; won't you?"
For a moment the principal was silent. Then he said slowly:
"Bert, I would very much like to believe you, for I have always found you a good, manly and upright boy. But the evidence is strong against you I am sorry to say. And this trick was one I can not easily overlook. Rolling the snowball on the steps was bad enough, but when water was poured over it, to freeze, and become ice, making it so much harder to clean off, it made matters so much worse.
"Besides making a lot of work for the janitor, there was danger that some of the teach-
