“Stand by here with a couple of cutting-in spades,” cried Moran, “and fend off if you see any shark; now, then, are you ready, mate?” Wilbur took his determination in both hands, threw off his coat and sandals, and went over the stern rail. “Put your ear to the water,” called Moran from above; “sometimes you can hear their flukes.” It took but a minute to adjust the pintle, and Wilbur regained the deck again, dripping and a little pale. He knew not what horrid form of death might have been lurking for him down below there underneath the kelp. As he started forward for dry clothes he was surprised to observe that Moran was smiling at him, holding out her hand. “That was well done,” she said, “and thank you. I've seen older sailor-men than you who wouldn't have taken the risk.” Never before had she appeared more splendid in his eyes than at this moment. After changing his clothes in the fo'castle, he sat for a long time, his chin in his hands, very thoughtful. Then at length, as though voicing the conclusion of his reflections, said aloud, as he rose to his feet: “But, of course, THAT is out of the question.” He remembered that they were going home on the next day. Within a fortnight he would be in San Francisco again--a taxpayer, a police-protected citizen once more. It had been good fun, after all, this three weeks' life on the “Bertha Millner,” a strange episode cut out from the normal circle of his conventional life. He ran over the incidents of the cruise--Kitchell, the turtle hunt, the finding of the derelict, the dead captain, the squall, and the awful sight of the sinking bark, Moran at the wheel, the grewsome business of the shark-fishing, and last of all that inexplicable lifting and quivering of the schooner. He told himself that now he would probably never know the explanation of that mystery. The day passed in preparations to put to sea again. The deck-tubs and hogsheads were stowed below and the tackle cleared away. By evening all was ready; they would be under way by daybreak the next morning. There was a possibility of their being forced to tow the schooner out by means of the dory, so light were the airs inside. Once beyond the heads, however, they were sure of a breeze. About ten o'clock that night, the same uncanny trembling ran through the schooner again, and about half an hour later she lifted gently once or twice. But after that she was undisturbed. Later on in the night--or rather early in the morning--Wilbur woke suddenly in his hammock without knowing why, and got up and stood listening. The “Bertha Millner” was absolutely quiet. The night was hot and still; the new moon, canted over like a sinking galleon, was low over the horizon. Wilbur listened intently, for now at last he heard something.