. Annals of hygiene. the privet hedge, and is pro-vided with a sink and waste pipe which take the overflow sometwenty or thirty yards to a neighboring stream. In this way the The Annals of Hygiene—163 constant dripping of water in the neighborhood of the well is pre-vented, for I am very much alive to the dangers attending a con-stant water-drip, which might be able in time to worm its waythrough soil and concrete into the well itself. I regard thisquestion of the overflow as one of great importance which is toooften neglected. Figs, i and 2 show this well in section andplan. The nearest point
. Annals of hygiene. the privet hedge, and is pro-vided with a sink and waste pipe which take the overflow sometwenty or thirty yards to a neighboring stream. In this way the The Annals of Hygiene—163 constant dripping of water in the neighborhood of the well is pre-vented, for I am very much alive to the dangers attending a con-stant water-drip, which might be able in time to worm its waythrough soil and concrete into the well itself. I regard thisquestion of the overflow as one of great importance which is toooften neglected. Figs, i and 2 show this well in section andplan. The nearest point to the well upon which any manurialdeposit of excreta is likely to be made is on the far side of theprivet hedge, and the distance of this point from the bottom ofthe well is seven feet. All water which finds its way into thewell must have passed through at least six or seven feet of earth,and, of course, the great bulk of the water has passed through afar greater length. Three chemical analyses of this water, one. Fig. I.—Section of well, showing concrete lining and posi-tion of pump. The diagonal line on the right of the figure isto mark the distance from the nearest garden bed to bottom ofwell. by Professor Frankland and two by Dr. Kenwood, testify to itsorganic purity, and three bacteriological investigations have givensimilar indications of purity. A bacteriological examination ofthe water from the river Anton and the well water, made onApril ir, 1895, gave 1133 growth per cubic centimetre for theriver and only for the well. Of course, there may be a dan-gerous microbe among this small number, but, on the whole, Ithink the best guarantee of the purity of the water is the conditionof the well, which after four years is as clean on the bottom andsides as it was the day it was made. There has been no appre-ciable increase of sediment on the bottom, and the pebbles are asplainly visible as they ever were. The well is for experimentalpurposes mainly, but water for gard
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecthygiene, bookyear1896
