The twin-screw cruiser _Cecile_, which was designed before the _Tage_, and is somewhat smaller, illustrates the principle of duality in construction; the two main engines are situated in separate compartments, and the six boilers are arranged in three different groups. The sail area is 2153 square yards, and the steel lower masts serve as ventilators to the hold, and carry steel crow’s-nests in which are mounted rapid fire and machine guns. The primary batteries of the two ships are similar, each carrying six 6¼-inch guns on the spar-deck (one forward, one aft, and four on sponsons) and ten 5½-inch pieces on the covered deck in broadside. The secondary battery of the _Cecile_ consists of ten 37-millimetre (1.45-inch) guns, and that of the _Tage_ of three 47-millimetre (1.85-inch) rapid-fire guns, and twelve 37-millimetre revolving cannon—all of the Hotchkiss pattern. Both ships are supplied with above-water torpedo tubes, the former having four, the latter seven. The estimated maximum speed of the _Tage_ is 19 knots, with 10,330 horse-power, and that of the _Cecile_ is 18½ knots, with 9600 horse-power. The latest cruisers laid down are the _Jean Bart_ and the _Dupuy de Lôme_, the first bearing the name of the rugged old sea-wolf who entered the navy as an apprentice and died a famous admiral, and the other that of the constructor who designed both in wood and iron the first steam line-of-battle ships. These vessels are of 352 feet length, 43.6 feet beam, 18 feet 10 inches mean draught, and 4162 tons displacement; their estimated maximum speed is 19 knots. The main battery is composed of four 6.3-inch guns mounted on sponsons, and of six 5.5-inch carried in broadside, and the secondary armament has six 37-millimetre revolving cannons, four 3-pounder rapid-fire guns, and the usual torpedo tubes. The _Alger_ and _Isly_ are similar in construction to the _Cecile_, but have the dimensions and armament of the _Jean Bart_; they are designed for 19 knots, and a coal endurance of 3600 miles at 13 knots. The _Mogador_ is a rapid cruiser of 4325 tons, and of nearly similar design, armament, speed, and endurance as the above. The _Chanzy_, _Davoust_, and _Suchet_ belong to the same class of “croiseurs à barbette,” and are of 3027 tons displacement, with an estimated speed of 20 knots.