. A treatise on hygiene and public health . Fig. Fig. 35. least, and the contents renewed. These figures are taken from BaileyDentons Sanitary Engineering. The same object may be accom-plished by other devices, among which are several which rest on the useof the compressed blocks similar to those spoken of above. On the Softening of Hard Water. The disadvantage of hard water for domestic use has already been re-ferred to. Hardness is not peculiar to water from any one source; riversand lakes, springs and wells, are all liable to furnish hard water whenthey are situated in regions which co
. A treatise on hygiene and public health . Fig. Fig. 35. least, and the contents renewed. These figures are taken from BaileyDentons Sanitary Engineering. The same object may be accom-plished by other devices, among which are several which rest on the useof the compressed blocks similar to those spoken of above. On the Softening of Hard Water. The disadvantage of hard water for domestic use has already been re-ferred to. Hardness is not peculiar to water from any one source; riversand lakes, springs and wells, are all liable to furnish hard water whenthey are situated in regions which contain deposits of limestone or ofgypsum or of magnesian minerals. To understand the processes em-ployed for softening hard water, it is necessary to understand the causeof the property which we designate as hardness. There are many mineral compounds which, if present in water, give toit this property, and thus render it unfit for domestic use. The most com-monly occurring of these substances are the carbonate of lime and thecarbonate of magnesia, th
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Keywords: ., bookcentury1800, bookdecade1870, booksubjecthygiene, bookyear1879
