had a length of a little over 400 feet, with a breadth of 43³⁄₄ feet and a depth of 40³⁄₄ feet. Like the _Wyoming_ and _Wisconsin_, they had compound engines, one high-pressure cylinder of 60 inches diameter, working inverted on a forward crank, and two low-pressure cylinders working horizontally on the after crank. The _Montana’s_ boilers were constructed of a series of cross-tubes 15 inches in diameter and were intended to carry a head of 100 lb. of steam, but in consequence of an explosion when at 70 lb. pressure, they were replaced by ordinary tubular boilers with a pressure of 80 lb. of steam. The _Dakota_ was wrecked on the Welsh coast in May 1877, and a similar fate befell the _Montana_ three years later. Seven years passed and then the _Arizona_ was brought into the Guion service. She was of iron and was built and engined by Messrs. John Elder and Co. of Glasgow. Her dimensions were: 450 feet long, 45¹⁄₈ feet broad, 35³⁄₄ feet deep, with a register of 5147 tons. She differed from the earlier boats of the line by being four-masted, carrying square sails on the fore and main masts, having two funnels, and having her saloon accommodation amidships; in all these particulars, as well as in the straight cutwater, she bore a strong resemblance to her rivals of the White Star Line. [Illustration: MODEL OF THE “CITY OF PARIS,” 1866.] Although there was no deviation in her hull from the existing type, her machinery displayed some novel features. Her engines were compound with three crank shafts, each having one cylinder. The high-pressure cylinder was 62 inches in diameter, and was placed in the centre, between the low-pressure cylinders each of 90 inches, and all had a piston stroke of 66 inches. Steam was generated in seven boilers capable of withstanding 90 lb. pressure, and furnished with thirty-nine furnaces, which had an average coal consumption of 125 tons per day, or in round figures 25 per cent. in excess of her fastest rivals, which were then in the White Star Line. On her homeward voyage from New York in July 1879, the _Arizona_ succeeded in breaking the record, and repeated the feat on her outward passage in May 1880, when she made the passage from Queenstown to New York in 7 days, 10 hours, 47 minutes, thus proving herself for two years in succession the fastest boat on the Atlantic. While on her homeward passage in November 1879, the _Arizona_ collided at full speed with an iceberg. Although she gave the berg a direct blow she is one of the few vessels that have managed to survive after such an experience. It was stated at the time that there was a projecting spur of ice from the berg under water, and on this the ship slid. Her weight caused the berg to rock, and it was to this circumstance alone that she owed her safety, for the rocking of the huge mass of ice enabled her to slip off the spur into deep water again. A tremendous quantity of ice, dislodged by the shock, crashed