9. Second " " " 10. Third " " " 11. Fourth " " " 12. Chief Engineer's " " 13. Master's " " 14. Paymaster's " " 15. Surgeon's " " 16. First Assistant Engineers' state-room. 17. Second Assistant Engineers' room. C. The Steerage, occupied by Midshipmen and Masters' Mates. D. Third Assistant Engineer's room. 18. The Armory. 19. Ward-room pantry, through which passes the mizzen-mast. 20, 20. Berths. 21, 21. Mess store-rooms. In the floor of the ward-room, between the state-room, 8 and 12, there are two scuttles leading down to the magazine, so that, during an action, all the powder is passed up through this room. Woollen screens are hung up on each side of these scuttles, when they are opened, to prevent any spark from being carried down to the powder. There are four other scuttles leading down into the hold from the ward-room to the various store-rooms located there, and several in the floor abreast of the steerage. On the forward part of the berth deck, just abaft the foremast, there are four state-rooms for the use of the carpenter, gunner, boatswain, and sailmaker. All persons except those mentioned sleep in hammocks. The engine department of the Chatauqua consisted of one chief, two first assistant, two second assistant, and one third assistant engineers, with eighteen firemen and eighteen coal heavers. The chief engineer is a ward-room officer. He has the sole charge of the engine, and all persons connected with its management, but he keeps no watch. The other engineers obey the orders of their chief, and are divided into watches. They attend to the actual working of the engine. The firemen are also classified, and receive different grades of pay, a portion of them attending to the oiling of the machinery,--called "oilers,"--while others superintend or feed the fires, and do other work connected with the engine and boilers. The coal-heavers convey the fuel from the coal bunkers to the furnaces. Mr. Ensign Somers was the fourth lieutenant of the Chatauqua, and occupied the last state-room on the left, as you enter the ward-room. It was a nice little apartment, and the young officer was as happy as a lord when he was fully installed in his new quarters. And well might one who had commenced his naval career as an ordinary seaman, sleeping in a hammock, and who had never before known anything better than the confined accommodations of the steerage, have been delighted with his present comfortable and commodious quarters.