light," said Aunt Kate, practically, "so I don't think we need to be afraid of it—whatever it was. We'll leave a light outside the tent the rest of the night, and it won't come back."
"I'm going to sleep in the boat!" declared Grace.
"Nonsense!" cried Betty. "Don't be a deserter! Have some more chocolate, and we'll all go to sleep," and they finally persuaded Grace to remain. It took some little time to get their nerves quiet, but finally they all fell into a more or less uneasy slumber that lasted until morning. The "ghost" did not return.
Wan, and with rather dark circles under their eyes, the girls got breakfast the next morning. The meal put them in better spirits, and when they bustled around about the camp duties they forgot their scare of the night before.
They made a partial tour of the island, though some parts were too densely wooded and swampy to penetrate. But such parts as they visited showed the presence of no other campers. They were alone on Elm Island, save for an occasional picnic party, several evidently having been there the day before.
"Then that—thing—couldn't have been a cow," said Grace, positively.
"Make up a new theory," suggested Betty,
