Three.

When it occurred to him that he had had as much violent physical exercise as was good for his years, and that he had left his books in disarray, and that his business demanded him, Edwin apologetically announced that he must depart, and the child admitted that Aunt Janet was probably waiting to give him his lessons.

“Are you going back the way you came? You’d better. It’s always best,” said Edwin.

“Is it?”

“Yes.”

He lifted and pushed the writhing form on to the wall, dislodging a jar, which crashed dully on the ground.

“Auntie Janet told me I could have them to do what I liked with. So I break them,” said George, “when they don’t break themselves!”

“I bet she never told you to put them on this wall,” said Edwin.

“No, she didn’t. But it was the best place for aiming. And she told me it didn’t matter how many crocks I broke, because they make crocks here. Do they, really?”

“Yes.”