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 The huge wooden ships of the line and frigates were displaced by the application of steam, and these have been superseded by iron and steel; and the end is not yet, for inventors assert that electricity will be the motive power on the ocean as well as on the land.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.

"Now for a quick run to 'Tugas, let us hope!" the doctor exclaimed, as the launch began to cut through the clear water of Key West Harbor. "Eight-thirty; we ought to be there by four-thirty this evening, unless the weather changes. We can't risk any rough seas in this launch, you know. If a storm should come up, we'd have to take refuge on one of the four or five keys between here and 'Tugas. Do you know that Fort Jefferson is the hardest place in the United States for a traveller to reach, Frank, unless he has a government boat to travel in?"