38 MARKET DAIRYING 
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.” 
Clean Milking, (From Da. Diy,, U.S, Dept, of 4.) 
