THE GENERAL PROBLEM OF KEEPING WELL 



399 



caution. Deep wells that are kept clean usually may be 

 relied on to furnish water free from organic impurities, 

 but such water often holds in solution so much of mineral 

 impurities as to render it unfit for drinking. The presence 



FIG. 169. Sources of contamination of cistern and well water. 



Illustration shows liability of contamination from surface 



drainage and from entrance of filth at top. 



in water of any considerable quantity of the compounds of 

 iron or calcium makes it objectionable for regular use. 



Hygienic Housekeeping. However carefully a house 

 has been constructed from a sanitary standpoint, the 

 constant care of an intelligent housekeeper is required 

 to keep it a healthful place in which to live. Daily clean- 

 ing and airing of all living rooms are necessary, while such 

 places as the kitchen, the cellar, and" the closets need extra 

 thoughtfulness and, at times, hard work. Moreover, the 

 problem is not all indoors. The immediate premises must 

 be kept clean and sightly, and all decaying vegetable and 

 animal matter should be removed. Home sanitation con- 



