William Gray, a rich ship-owner, had a clipper-bark which had been knocking about in the West Indies in search of freight. A vessel laden with sugar put into St. Thomas in distress, and sold her cargo, which the American purchased as a venture. She ran the blockade, and Mr. Gray was the first to board her. "Captain," he said, nervously, "I see you're very deep; what have you got in?" "Sugar," was the brief reply, "purchased on the ship's account." He felt that he had made no mistake, especially as Mr. Gray threw his hat in the air before he responded. Picking up his hat, Mr. Gray faced the Captain with a pleasant smile, and said, "It's just our luck, Captain; you have not only saved your ship, but this day there are not fifty boxes of sugar in all Boston, and prices are sky-high." Early in the century Salem had some swift vessels engaged in the East India and China trade, but these have mostly disappeared. Although large clipper-ships have mostly disappeared, we have many fine clipper-schooners engaged in fishing, which are unequalled for speed and weatherly qualities by the fishermen of all other nations. Change is the order of the day in shipping, as well as in most other things. The navies of the world have been changed three times during the past fifty years. The huge wooden ships of the line and frigates were displaced by the application of steam, and these have been superseded by iron and steel; and the end is not yet, for inventors assert that electricity will be the motive power on the ocean as well as on the land. WITH THE THANKS OF THE WAR DEPARTMENT. BY WILLIAM DRYSDALE. "Yes, the boy is in a bad way," Dr. Murray said, with his fingers on Frank's pulse; "a very bad way. This is a serious case. Why not let me take him out to Tortugas? We have plenty of fresh air there, and I should like to have him with me." "To Tortugas?" Mrs. Bethel exclaimed. "To the quarantine station? Why, you are liable to have yellow fever cases there any day! Oh, doctor, I never could let him go out there!" "Do you think I would take him into any danger?" the doctor laughed. "It is much safer there than in Key West. Our quarters are in the great fort, but the pest-house is on Bird Key, half a mile away. I do not know of any place in the far South that has as good a summer climate, for the wind strikes us on every side, as we are seventy miles from land. And as to danger--pshaw!" With Frank eager to go and his mother anxious to have his health improved, there was not much doubt that in the end the doctor's invitation would be accepted. That was the way it turned out, and when the doctor's steam-launch started from the naval depot wharf two days later, Frank was in the little cabin with the doctor, and his trunk was stowed away somewhere up forward.