. A treatise on hygiene and public health . ig. 16 represents the method for town-supply adopted in Sycamore,Illinois. Here a well, lined with masonry, is excavated to the hard-pan,and through this hard-pan tubes are driven into the water-bearing stratumbeneath, which is some seventy feet from the surface.^ In other placesthe water is taken in part from the ground-water by a collecting-well, andin part from lower strata by tubes dri\en into the bottom of the is the case at Attleborough, Mass. Artesian vjells.—An artesian well is a well which is sunk or bored See Scientific American S
. A treatise on hygiene and public health . ig. 16 represents the method for town-supply adopted in Sycamore,Illinois. Here a well, lined with masonry, is excavated to the hard-pan,and through this hard-pan tubes are driven into the water-bearing stratumbeneath, which is some seventy feet from the surface.^ In other placesthe water is taken in part from the ground-water by a collecting-well, andin part from lower strata by tubes dri\en into the bottom of the is the case at Attleborough, Mass. Artesian vjells.—An artesian well is a well which is sunk or bored See Scientific American Supplement, No. 27, July 1, 1876. 254 OK DKLNKDTG-WATEE AND PUBLIC WATEE-SUPPLIES. through impervious strata, so as to reach a water-bearing stratum in whichthe water is under sufficient hydrostatic pressure to be forced to the sur-face, or nearly to the surface of the ground w^hen the well is term is not generally employed unless the impervious strata are ofrock and the depth of the well considerable. Thus a driven-well, 20 or.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjecthygiene, bookyear1879
