内容简介：
Early in the spring of the year 1884 the three-masted schooner "Castor," from San Francisco to Valparaiso, was struck by a tornado off the coast of Peru. The storm, which rose with frightful suddenness, was of short duration, but it left the "Castor" a helpless wreck. Her masts had snapped off and gone overboard, her rudder-post had been shattered by falling wreckage, and she was rolling in the trough of the sea, with her floating masts and spars thumping and bumping her sides. The "Castor" was an American merchant-vessel, commanded by Captain Philip Horn, an experienced navigator of about thirty-five years of age. Besides a valuable cargo, she carried three passengers -- two ladies and a boy. One of these, Mrs. William Cliff, a lady past middle age, was going to Valparaiso to settle some business affairs of her late husband, a New England merchant. The other lady was Miss Edna Markham, a school-teacher who had just passed her twenty-fifth year, although she looked older. Ralph, a boy of fifteen, was her brother, and she was taking him with her simply because she did not want to leave him alone in San Francisco. But when the storm had passed, and the sky was clear, and the mad waves had subsided into a rolling swell, there seemed no reason to believe that anyone on board the "Castor" would ever reach Valparaiso. . . .