CARE OF MILK AND CREAM 39 



conditions it is possible to produce milk with a germ- 

 content of less than 10,000 bacteria to a cubic centimeter 



FIG. 9. An old barn with cracks filled with straw is not a sanitary 

 place in which to milk. 



when the utensils are properly prepared. For data and 

 proper methods of cleaning dairy utensils, see Chapter III. 



A METHOD OF PREVENTING THE GROWTH OF BACTERIA 



A question that naturally follows the above discussion 

 is : What factors are important in the growth of bacteria 

 and what may be done to prevent the development of 

 those that gain access to milk ? 



