Dave dropped off first, and was presently followed by Roger.

But Phil was restless and turned from one side to the other.
"Oh, pshaw! why can't I sleep ?" murmured the shipowner's son to himself in disgust, and then out of curiosity he looked at his watch.

By the glare from the campfire he saw that it was nearly one o'clock.
He was just straightening out again when a peculiar rustling among the horses caught his ears.

He listened for a moment, then sat up straight.
"Something doesn't suit them," he reasoned.

"Wonder what it can be ?" He hesitated, then turned over on his hands and knees and crawled to the opening of the tent and peered around outside.