250 



CREAMERY BUTTER MAKING 



unskilled milkers the number of bacteria was 2,846, or 

 three times as great. 



Wiping or washing udders before milking not only 

 very materially reduces the bacterial content of the milk, 

 but also lessens the amount of dirt to a very great extent. 

 Frazer has shown that ''the average weight of dirt which 

 falls from muddy udders during milking is ninety times 

 as great as that which falls from the same udder after 

 washing, and when the udder is slightly soiled it is 

 eighteen times as great." 



Fig. 64.— Clean Milking. (From Da. Div., U. S. Dept, of A,) 



