l86 PRACTICAL DAIRY BACTERIOLOGY 



ease in the cows, especially of udder disease; (c) whether they 

 are kept in a condition of cleanliness or are allowed to become 

 caked with manure; (d) whether they are given exercise; (e) 

 the kind of food which is used; (f) the time of feeding relative 

 to milking. 



3. The source of the dairy water. The source of the water 

 which is the cow's drink is a matter of far less importance than 

 the water used in the dairy for washing the milk cans and other 

 utensils. This source of supply should be beyond suspicion. In 

 suspicious cases, samples of water should be collected and sent 

 to a proper laboratory for analysis, to determine whether the 

 water is fit to be used in the dairy. 



4. The condition of the barn; whether it has plenty of light 

 and air, whether the manure is removed frequently, and whether 

 dirt and dust are allowed unduly in and around the cows' stalls. 



5. The method of disposing of the manure; whether it is 

 allowed to accumulate in the barn, under the barn or nearby, 

 or whether it is frequently removed to a considerable distance. 



6. The method of milking; whether the milkers are careless 

 or slovenly in their work, thus encouraging the entrance of 

 great quantities of filth into the milk or udder of the cow, or 

 whether they are intelligent and cleanly in their actions so as 

 to produce milk under the best conditions. 



7. The condition of the milker. This should refer to (a) the 

 matter of his health, inasmuch as all suspicious cases of in- 

 fectious diseases should be rigorously excluded from the dairy ; 

 (b) cleanliness of the milker before going to the milking. That 

 the milker should make a careful toilet and wear clean clothes 

 has already been emphasized and needs to be carefully watched 

 by the inspector. 



8. The method of washing and sterilising the milk jars, cans 

 and other utensils. 



9. The treatment of the milk after milking. This should 

 include the question of aeration, attention being especially given 



