"Umph!" said Mr. Ball, looking hard at the lad, with half a mind to make him go. Then he changed his purpose and went to the stove himself, raked forward the coals, and made up the fire. Just as he was shutting the stove-door, the explosion came--the ashes flew out all over the master, the stove was thrown down from the bricks on which its four legs rested, the long pipe fell in many pieces on the floor, and the children set up a general howl in all parts of the room. As soon as Mr. Ball had shaken off the ashes from his coat, he said: "Be quiet--there's no more danger. Columbus Risdale, come here." "He did not do it," spoke up Susan Lanham. "Be quiet, Susan. You know all about this," continued the master to poor little Columbus, who was so frightened as hardly to be able to stand. After looking at Columbus a moment, the master took down a great beech switch. "Now, I shall whip you until you tell me who did it. You were afraid to go to the stove. You knew there was powder there. Who put it there? That's the question. Answer, quick, or I shall make you." The little skin-and-bones trembled between two terrors, and Jack, seeing his perplexity, got up and stood by him. "He didn't do it, Mr. Ball. I know who did it. If Columbus should tell you, he would be beaten for telling. The boy who did it is just mean enough to let Lummy get the whipping. Please let him off." "_You_ know, do you? I shall whip you both. You knew there was gunpowder in the fire, and you gave no warning. I shall whip you both--the severest whipping you ever had, too." And the master put up the switch he had taken down, as not effective enough, and proceeded to take another. "If we had known it was gunpowder," said Jack, beginning to tremble, "you would have been warned. But we didn't. We only knew that something had been put in." "If you'll tell all about it, I'll let you off easier; if you don't, I shall give you all the whipping I know how to give." And by way of giving impressiveness to his threat he took a turn about the room, while there was an awful stillness among the terrified scholars. I do not know what was in Bob Holliday's head, but about this time he managed to open the western door while the master's back was turned. Bob's desk was near the door. Poor little Columbus was ready to die, and Jack was afraid that, if the master should beat him as he threatened to do, the child would die outright. Luckily, at the second cruel blow, the master broke his switch and turned to get another. Seeing the door open, Jack whispered to Columbus: "Run home as fast as you can go."