PRODUCING GOOD MILK 309 



room is perfectly pure this aeration improves the quality of 

 the milk very much. 



Milk which is delivered to city patrons should be bottled 

 because it is cleaner. When each customer's amount is dipped 

 from a can at each stopping place dust is sure to be intro- 

 duced from the street. Also, the dippers and the vessel into 

 which the milk is put are apt to have dust collected on them. 

 Winds blowing the dust about city streets spread thousands of 

 germs of all kinds. No kind of food should be exposed to this 

 dust, and least of all milk. Keeping the bottles thoroughly 

 clean is another important item in connection with city milk 

 supply. They should be thoroughly scalded, steamed, and 

 exposed to the sun. 



