Keo was in such a happy mood that he scarcely noticed where he stepped, so he was much surprised when, in the middle of a laugh, the ground gave way beneath him, and he fell to the bottom of Gouie’s deep pit. He was not badly hurt, but had bumped his nose severely as he went down; so he stopped laughing and began to think how he should get out again. Then he found the walls were higher than his head, and that he was a prisoner.