strong hand to do it. Steam turns the turrets of the monitor, steam exerts its force through the medium of hydraulic machinery, checks the recoil of the heavy gun as it runs in, forces the mechanical sponge into its bore, works the shot-lift that brings up the ammunition, works the rammer that drives it home into the gun; finally runs the gun out and points it, the huge gun raising or lowering its muzzle, or turning to right or left, as the captain of its crew touches a valve-handle or presses down a little lever. But steam is not applied to the guns only; it works the windlasses, winches, and capstans that raise the anchors, braces up the yards, and lifts stores and heavy weights in and out of the ship, or moves them from place to place. It furnishes power to the steering apparatus, works the pumps, keeps the ventilating fans going; and in ships that shew the electric light at night it drives the electrical apparatus. Engines are made to start engines in some of the newer iron-clads. Instead of moving heavy levers when he wishes to set the engines going, the engineer just touches a miniature engine, which moves the levers of the larger engines for him. And all these more important engines are multiplied and made to act either together or separately, so that in the event of one being disabled, others are left to do its work. We hear of ships of war being fitted with twenty or thirty engines, without counting sundry smaller ones. Those of the turret-ship _Temeraire_ are thus divided--two main engines for propelling the ship, with two starting engines; four feed engines, two circulating engines, two bilge engines, four fan engines, one capstan engine, one steering engine, two pumping engines connected with the hydraulic loading-gear, two turning engines for rotating the turn-tables or turrets, two engines to pump water in case of fire, four engines for hoisting out ashes, one engine for condensing air in working the Whitehead torpedo, and an engine for the electric light apparatus. Admiral Fellowes had such ships as these in his mind when, speaking before a committee of the Admiralty, he said: 'Men-of-war now are nothing more nor less than floating machines; there are the steam capstans, the steam steering-gear; every portion of your guns, slides, and carriages worked by steam; there are the double bottom and the inner bottom, and everything connected with the machinery; in fact the whole ship is now a floating machine, and is more or less under the control of the chief engineer.'