Jemmy’s prediction has been amply verified, for almost every year since the compound engine came largely into use, has witnessed a greater speed in ocean steamers. And the speed has not been obtained at sacrifice of comfort. On the contrary, an ocean passenger steamer belonging to any of the great passenger lines is something like a floating palace. After the _Britannic_ and _Germanic_ appeared, line after line put forth fine vessels; and in 1889 was launched the White Star steamer _Teutonic_, which for some time held the proud position of the fastest ship on the Atlantic. She had crossed in 5 days, 16 hours, 31 minutes. The average of several trips, both for herself and her sister _Majestic_, was 5 days, 18 hours, 6 minutes. And they were run very close by the American liners, _Paris_ and _New York_. These four vessels were among the first propelled by twin-screws. Engineers began to see that it was better to use great power in two shafts and two propellers than in one. In July, 1892, the fine Inman (now called American) liner _Paris_ crossed the Atlantic in 5 days, 15 hours, and 58 minutes, and in October of the same year the same vessel steamed from Liverpool, touching as usual at Queenstown, in 6 days, 2 hours, and 24 minutes—including the time at the Irish port. This was then the quickest time on record for the entire journey. From Queenstown to Sandy Hook the time was 5 days, 14 hours, and 24 minutes, a gain of 1 hour and 34 minutes on her voyage in the previous July. Her best day’s run was 530 knots. The contest, therefore, between the two White Stars and the two Inmans has been very close, the record time resting now with the one and then with the other. But the Cunard Company, not to be beaten, put on the _Campania_ in 1893, and in April of that year she made the fastest maiden trip then on record, one day indeed compassing 545 knots in the 24 hours. The _Campania_ is 625 feet long by 65¼ feet broad, and 43 feet deep from the upper deck. Her gross tonnage is 12,950. She is fitted with a cellular double bottom extending fore and aft, and also with sixteen bulkheads, so arranged that the vessel would float even if two, or in some cases three, compartments were open to the ocean. She is a twin-screw vessel, fitted with two sets of very powerful triple-expansion engines. They are seated in two separate engine-rooms with a dividing bulkhead and water-tight doors. Each set of engines has five inverted cylinders—viz., two high-pressure, one intermediate, and two low-pressure—all arranged to work on three cranks set at an angle of 120 degrees to each other. Her indicated horse-power is 30,000. The boiler-rooms are doubly cased, the space between being fitted with nonconducting material for sound and heat. [Illustration: HIGH AND LOW PRESSURE CYLINDERS OF THE “CAMPANIA’S” ENGINES.]