"Oh, but Bunny, what will we do if we can't get the door open?" Sue asked, and she seemed almost as frightened as the day when she had fallen down in the mud puddle when she and Bunny went to meet Aunt Lu.

"Well, if I can't get the front door open, maybe I can get the back one or the side one open," Bunny said. "Come on, we'll try them."

But the back door was also locked and there was no key in that to turn. Neither was there a side door. Both the front and back doors were locked.

Bunny looked at Sue, and Sue looked at her little brother. Her eyes were bright and shiny, as though she were going to cry. Bunny tried to speak bravely.

"Sue—we—we're locked in!" he said.

"Oh, Bunny!" she exclaimed. "What are we going to do? Oh! Oh! Oh dear!"

CHAPTER VI

ADRIFT IN A BOAT

Bunny Brown was a brave little chap, even though he was only a bit over six years old, "going on seven," as he always proudly said. And one of the matters in which he was braver than anything else was about his sister Sue.

His mother had often spoken to him about his sister when he and Sue were allowed to walk up and down in the street, but not to go off the home block.