nozle to the fire, immediately extinguishes it, which being liable to be instantly used, I think a house, palace, &c. that has this invention, may be said to be morally out of danger of being destroyed, or so far injured as Whitehall and Kensington have been within a few years. This command of water must be allowed to be of vast advantage to any house whatsoever. Where brewing, washing, &c. is used, the copper standing high may be filled as easy as if it stood low, by which means the hot liquor may be contrived to go to all your coolers, and other vessels, either by a syphon, stop-cock, &c. without the hand-labour of pumping or bailing with buckets. But more conveniencies than we can at present foresee will be discovered in the use of this engine for palaces, houses, &c. 3. For fens, and the like, it is convenient that these engines be made very large; for at all small heights a small quantity of fire will deliver prodigious quantities of water. For suppose we force but thirty feet, and suck twenty feet, if the boiler does but fill the vessels, called receivers, with steam strong enough to counterpoise or exceed the force of the atmosphere, or spring of the common air, it will discharge them at so small a height as thirty feet force in a very little time; and the steam having very little force or spring is immediately condensed, so that it will presently suck full in one of the vessels while the other is discharged. Now, inasmuch as the fire being more or less adds nothing to the suction. I think such lifts, being seldom above thirty-six feet, or under six feet, all the directions further needful for fixing the engine for this use is, in all lifts under twenty-four feet, to place your engine so as a little above your force-clacks may be the place of the delivery of your water into a convenient trough or lander, to be carried off at the most proper place for its discharge. If it be any height above twenty-four feet, you have nothing to do but to continue the length of your force-pipe to the height required. It ought to have a shed or covering round it, and to be placed at the lowest place of your fen or bog, as other engines designed for that purpose commonly are. As for fixing the engine in ships, when they may be thought probably useful, I question not but we may find conveniency enough for fixing them.