shoulders against the vessel's hull, the two men thrust with all their might, with the result that the nut suddenly started, and the spanner fell off, dropping to the bottom of the harbour and leaving the two operators hanging by the rudder chains. The drop from thence to the sand, however, was not above six feet--a mere trifle in water--so they let go, recovered the spanner, and got to work again. Once started, the nut gave them very little further difficulty, and ten minutes later it was off and safely buried out of sight in the sand. The propeller, however, still remained on the shaft, and might quite possibly continue to remain there for a time, even should the boat get under way; but the moment that she stopped her engines after once getting under way, or if she should happen to attempt to go astern, the propeller would at once slip off and be lost. Three-quarters of an hour from the moment of leaving the yacht, Jack and Macintyre were safely on board her again, with their task accomplished, much to the satisfaction of the party. It was well on toward lunch-time ere the yacht's bunkers were full and she was able to haul off from the coal hulk, and the greater part of the afternoon was occupied by the crew in washing down the decks and paint work, cleaning up generally, polishing brasswork, and restoring the little vessel to her normal state of immaculate neatness; during which Jack and the two Montijos took a final run ashore, for it had been decided that, failing the occurrence of anything to cause an alteration of their plans, they would leave for Cuba on the following day.