And then he dropped suddenly into healthy slumber.
How long he slept he had not the remotest idea, but he awoke with a start. Something had happened, but he did not quite realize what. That he had been awakened by something he was perfectly sure. Almost holding his breath, and listening intently for the slightest sound, he lay perfectly still, his eyes open, but seeing nothing in the darkness.
After perhaps twenty seconds Jack raised himself cautiously to his elbow, still straining his ears. Then there came again the thing which had awakened him.
The sloop swayed, as though something were being pressed heavily upon her side.
Silently as a shadow, Jack slipped from his bunk, and extended a hand to awaken his chum. But on second thought he changed his mind. George would be sure to say something if he were awakened, and that would scare the midnight prowler off instantly.
Jack was standing in the middle of the cabin, feeling for a stout stick which he had placed at
