MILK AND ITS CARE. 



165 



Most of the 

 bacteria found in 

 milk are perfectly 

 harmless, a 1 - 

 thouirh at times 

 those causing 

 diseases, such as 

 typhoid fever, 

 diphtheria, and 

 tuberculosis, may 

 get into the milk. 

 It is impossible 

 to keep all bac- 

 teria out of milk, 

 but a crreat deal 

 can be done to- 

 ward keeping 

 them out, and 

 keeping those 

 that do get in 

 from growing 



o°o op; 



o ^ 

 o 



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a 



Q 



.o 



o 

 o 



vJ 



o 



OoO. 



^. O o U o O 



K); o^oo o 



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o O ooo^og^ 

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(Fig- Z7)-^ 



2. Keeping Bac- 

 teria Outo/Miik. 

 — This process 

 may be summed 

 up in one word — 

 cleanliness. 



The bacteria (Fig. ^y^ get into milk with 

 dust particles from many sources, but the most 



FIG. 3/. PURE AND IMPURE MII.K 



HIGHLY MAGNIFIED. 



,-I, pure milk; B, after standing in a warm room 

 for a few hours iu a dirty dish, showing, be- 

 sides the fat globules, many forms of 

 bacteria. 



