Many other notable vessels were constructed in the same period for other owners; and while it is not possible to refer to all of them, mention may be made of the _Tuscarora_, built in 1897, for William Clark, Esq., of Paisley. This vessel, which is illustrated on Plate XXIV., is 170 ft. long, and of 775 tons. She had a bridge and promenade deck 104 ft. long; and there were ten state-rooms and large saloons for the owner and his guests. Built for oversea cruising, she had a very complete installation of refrigerating machinery. The triple-expansion engines with which she was fitted developed 1030 horse-power when running at 150 revolutions, equal to a piston speed of 675 ft. per minute. Steam was supplied by a single-ended boiler. A much larger vessel--indeed, the largest of the type constructed by the firm--was the _Margarita_, constructed for A. J. Drexel, Esq., of Philadelphia, to the designs of the late Mr. G. L. Watson, who did so much for the advance of the science of naval architecture as applied to sailing and steam yachts. This vessel is of 272 ft. in length, with a displacement of 2522 tons. For the owner and his guests there are thirteen large state-rooms, and the general saloons include dining, drawing, and smoking rooms, a boudoir, and a children's nursery. The yacht is equipped with all the accessories of the modern liner, including refrigerating appliances. It is propelled at a speed of over 17 knots by twin-screws, operated by two independent sets of triple-expansion, four-cylinder engines, balanced to obviate vibration. [Illustration: Plate XXIV. THE "MARGARITA."] [Illustration: THE "TUSCARORA."] TABLE VI.--GENERAL PARTICULARS OF PRINCIPAL STEAM YACHTS BUILT BY SCOTTS' SHIPBUILDING AND ENGINEERING COMPANY, LIMITED, GREENOCK.