addicted to the luxury."

But, after all, tired as they were, no one felt like going to sleep,
once they were prepared for it. They talked over the events of the
day, got to laughing, and from laughing to almost hysterical giggling.
But finally nature asserted herself, and all was quiet aboard the Gem,
which had been moored to a private dock, just above the town.

It was Betty, rather a light sleeper, who awoke first, and she could
not account at once for the peculiar motion. It was as though she was
swinging in a hammock. She sat up, and peered about the dimly lighted
cabin. Then the remembrance of where she was came to her.

"But-- but!" she exclaimed. "We're adrift! We're floating down the
river!"

She sprang from her berth and awakened Grace by shaking her.

CHAPTER XI

IN DANGER

"What is it? Oh, what has happened?"

Grace cried half hysterically as she saw Betty bending over her. The
others awakened.

"Why, we're moving!" exclaimed Amy, in wonderment.

"What did you want to start off for, in the middle of the night?"