. Preventive medicine and hygiene. After a person becomes accustomed to the taste of a par-ticular water another does not appeal to him and does not satisfy histhirst to so great an extent. Once having been accustomed to a moder-ately hard water, a soft water is very flat and tastes much like distilledor rain water. Odors in waters are objectionable, rather than detrimental to a rule, the most objectionable odors develop in surface waters andare caused by the growth of algae, diatoms, protozoa, and other micro-scopic beings. The earthy odor of some ground waters is due to sub-stances


. Preventive medicine and hygiene. After a person becomes accustomed to the taste of a par-ticular water another does not appeal to him and does not satisfy histhirst to so great an extent. Once having been accustomed to a moder-ately hard water, a soft water is very flat and tastes much like distilledor rain water. Odors in waters are objectionable, rather than detrimental to a rule, the most objectionable odors develop in surface waters andare caused by the growth of algae, diatoms, protozoa, and other micro-scopic beings. The earthy odor of some ground waters is due to sub-stances taken up during the passage of the Avater through the soil. Whena well-water becomes offensive it is evidence of stagnation at the bottomof the well or the presence of dead animals. In the case of deep wellshydrogen sulphid and other inorganic compounds may impart odors tothe water. The odors and tastes which develop in impounding reser-voirs from stagnation and putrefaction of the organic matter have beendiscussed on page


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Keywords: ., bookauthorwh, bookcentury1900, bookdecade1910, booksubjecthygiene