. Creamery butter-making. Butter. WATER SUPPLY 257 commonly known as the Abyssinian tube well, is the cheapest and one of the safest. This well is made by driving into the ground a water-tight iron tube, the lower end of which is pointed and perforated. In case rocks and hard clay must be penetrated, or great depth must be reached to secure water, the bored or drilled well, piped from top to bottom with water-tight iron pipes, will be found most Fig. 68.—Soil strata. (From Harrington's "Practical Hygiene.') Water from the upper pervious stratum should be avoided wherever po
. Creamery butter-making. Butter. WATER SUPPLY 257 commonly known as the Abyssinian tube well, is the cheapest and one of the safest. This well is made by driving into the ground a water-tight iron tube, the lower end of which is pointed and perforated. In case rocks and hard clay must be penetrated, or great depth must be reached to secure water, the bored or drilled well, piped from top to bottom with water-tight iron pipes, will be found most Fig. 68.—Soil strata. (From Harrington's "Practical Hygiene.') Water from the upper pervious stratum should be avoided wherever possible, even with wells of the kind just described. Especially is this necessary where the wells are shallow. The purest water is obtained by sink- ing the well through an impervious stratum, like that shown in Fig. 68. The most dangerous well is the common dug well with pervious walls and so located as to permit seepage into. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Michels, John, 1875-. Milwaukee, Wis. , The author
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbutter, bookyear1911
