MILK AND ITS PRODUCTS 159 



milk should be made of good tin, with as few seams as 

 possible. Wherever seams occur, they should be flushed 

 with solder. Unflushed seams are difficult to clean, and, 

 as a rule, afford good breeding places for bacteria. Fig. 

 42 illustrates the character of the unflushed seam ; Fig. 43 

 shows a flushed seam, which fully illustrates its value. 



Fig. 44 illustrates a modern sanitary milk pail. The 

 value of a partially closed pail is evident from the re- 

 duced opening, which serves to keep out many of the 

 micro-organisms that otherwise drop into the pail during 



Fig. 44. Sanitary Milk Pail. 



milking. While such a pail is somewhat more difficult 

 to clean than the ordinary open pail, it is believed that 

 the reduced contamination during milking far outweighs 

 this disadvantage. 



All utensils used in the handling of milk should be as 

 nearly sterile as possible. A very desirable method of 

 cleaning them is as follows: 



First, rinse with warm or cold water. Second, scrub 



