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CHAPTER XVIII
THE PICNIC
Bunny Brown did not answer his sister Sue right away. He was listening to the queer scratching sound. He wanted to try and think what it was.
"Scratch! Scratch! Scratch!" it went.
"Oh, Bunny!" cried Sue, rolling over in the bunk, so she could easily slip over the edge, and be nearer to her brother. "It's something trying to get in."
"Yes," said Bunny. "It does sound like that."
"Maybe—maybe it's a wolf, Bunny!"
Bunny looked at the door and windows to make sure they were closed.
"There aren't any wolves up here," he said, shaking his head.
"How do you know?" Sue asked.
"'Cause I asked Grandpa Brown if there
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