The midshipmen were aroused by the cry of "All hands shorten sail!" The boatswain's whistle had not ceased sounding along the decks before Jack and Murray were on their way aloft, the first to the fore, the other to the maintop, where they were stationed. A heavy squall had struck the frigate, and she was heeling over with her main-deck ports almost in the water. Up they flew with the topmen to their respective stations, while the officer of the watch was shouting through his speaking-trumpet. "Let go topgallant-halyards. Clew up, haul down." Then came, "Let fly topsail-halyards. Clew up. Round in the weather braces." Down came the yards on the caps. The sails were now bulging out and shaking in the wind. Out flew the active topmen to the yard-arms. Jack, as he had often before done, ran out to get hold of the weather earing. He was hauling away on it while the men hauled the reef over to him. He had already taken two outer turns with it, when, as he leaned back, he felt himself suddenly thrown from his hold. In vain he tried to clutch the earing; it slipped through his fingers. Headlong he came down, striking the leech of the sail. Mechanically he clutched at that. Probably it broke his fall. In another moment he was among the foaming waters, with the ship flying fast away from him. Murray had meantime been watching to see which mast would have its sails first reefed, and as he looked forward he saw Jack fall from aloft. He guessed that he must have struck his head when falling, and that he would be senseless when he reached the water. In a moment his jacket and shoes were off, and down he slid like lightning by the topmast weather backstay, and, leaping into the water, swam towards the spot where Jack had fallen. Captain Lascelles had seen the accident. He was on the poop. Stepping back, he himself let go the life-buoy, noting exactly the spot where the accident had occurred. But not an order did he give. Perfectly cool, he stood waiting till the sails were reefed. Murray meantime caught sight of Jack, who lay senseless on the water, to the surface of which he had just risen, after having once gone down from the force with which he had fallen into the sea. Murray dreaded lest he should again see him sink. He exerted all his strength to get up to him. The life-buoy was not far off. Had there been time he would have first towed it up to Jack, but he was afraid if he did that he would in the meantime sink. Murray swam bravely on. The foam, as the wind swept it off the surface of the sea, dashed wildly in his face, but he kept his eye fixed steadily on Jack's head, that should he go down again, he might know exactly where to dive after him. Murray, under Jack's instruction, had been constantly practising swimming, and he now very nearly equalled his master in the art. His courage was as high, and what he wanted in muscular strength he made up by his undaunted spirit. He longed to know what had become