436 



SANITATION 



Preservatives in milk are very injurious to children. 

 The small amount of chemicals may do only a slight dam- 

 age to a grown person, for milk is only a small part of his 

 food; but for the little child milk is almost the whole diet. 

 Milk that does not sour in 24 hours, or less, at a summer 

 temperature, needs to be tested for preservatives. 



FIG. 308. 

 Sanitary Drinking Fountain. Water is turned on by foot pressure. 



426. Contaminated Cups, Money, Etc. Public drink- 

 ing cups are another source of great danger (Fig. 307) ; 

 many diseases can be spread by their use. The practice 

 of drinking from one "family" dipper is bad enough, but 

 how much worse it is for all the people, whether diseased 

 or well, to drink from the same cup when they are in 

 public buildings, or on the train, or at public fountains. 



