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the bottom of the latter mentioned well there are four adits or tunnels carried from the sides of the well east, west, north, and south, each about 40 feet in length and six feet square. The water rushes into these adits from numerous fissures in the chalk in immense abundance; At Winchester, near the Barracks, a Well has been sunk 170 feet into the chalk, and near the bottom there are cavities through which the water rushes like a torrent. At Sir Wm. Heathcote's Merdon estate the chalk has been penetrated to the depth of 331 feet, and the water passes across the bottom like a river with a rapid current. At the large well near Brighton the water rises to within nine feet of the surface. At Chiswick, where the boring has been carried 620 feet into the chalk, the water rises four feet above the surface. At the Fulham artesian well the water rises to the surface, and discharges 12,000 cubic feet in twenty-four hours. From many of the Brentford wells the water rushes up several feet above the surface. An artesian well has been sunk in the chalk at the Winchester railroad station which has never been exhausted. During the formation of the well at Watford 1,500,000 gallons of water daily were pumped up—a quantity sufficient to supply 150,000 persons with ten gallons a day. Attempts were made, during the dry summer of 1834, to exhaust the artesian well in Portsmouth Dockyard, which is sunk in the sand overlaying the chalk, but the quantity could not be diminished lower than 21 feet from the bottom. At the formation of an artesian well at Messrs. Reid's brewery, in London, this year, after the shaft had been sunk in the chalk, and water was approached, several driftways were driven laterally for a considerable distance along the faults and veins of flint in the chalk, to collect the water and convey it to the main shaft, by which means nearly 300,000 gallons a day were raised. Artesian wells, indeed, have furnished immense supplies of water even in the hottest and driest summer, and, when sunk in the chalk, those
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