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stone-work apartment, twenty feet high and thirty- six feet diameter at its base, and a wooden frame- work upon it of rather greater height, but gradually decreasing in diameter as it ascends. This is com- posed of perpendicular shutters, that open or close by a very simple contrivance, and thus admit the wind from any point, which acts upon a vertical fly-wheel made of upright planks, of a breadth nearlv equal to the diameter of the frame-work. This fly-wheel gives motion to three levers, out of which works a pump, whose compounded powers the water about one hundred and thirty feet into a lanre reservoir, from whence it is carried through a series of pipes into the town. A good brisk wind v.i'1 throw up about sixty-three hogs- heads in two hours. When this powerful agent is wantinsr, ahorse is fastened to an arm at the hot- torn of the fly-wheel, who will raise about sixteen hogsheads in the same time. The expeiice attend- ing the construction of the machine and its cover- Ing, was about ;x:h; that of laying the pipes, I. additional. The receip; :, however, arc not m werabie to the risque and. charges; as only i i :.!. is received rrom the water-rents of the houses x. winch the element is conducted, and out of this about y <;\. must be deducted for annual expences. Jonathan Hill, the contriver and architect, (another
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