CERTIFIED MILK 59 



hundred feet away. If these rules are observed not only 

 will the barnyard be free from objectionable smell, which 

 is an injury to the milk, but the number of flies in the 

 summer will be considerably diminished. These flies are 

 an element of danger, for they are fond of both filth and 

 milk and are liable to get into the milk after having soiled 

 their bodies and legs in recently visited filth, thus carrying 

 it into the milk. 



2. The Stable. In the stable the principles of cleanliness 

 must be strictly observed. The room in which the cows 

 are milked should have no storage loft above it; where 

 this is not feasible the floor of the loft should be tight, to 

 prevent the sifting of dust into the stable beneath. 



The stables should be well ventilated, lighted, and 

 drained, and should have tight floors, preferably of cement, 

 never of dirt. 



They should be whitewashed inside at least twice a year, 

 unless the walls are painted or of smooth cement finish 

 which can be washed frequently. 



The air should always be fresh and without bad odor. 

 A sufficient number of lanterns should be provided to en- 

 able the necessary work to be properly done during the dark 

 hours. The manure should be removed twice daily, except 

 when the cows are outside in the fields the entire time be- 

 tween the morning and afternoon milkings. The manure 

 gutter must be kept in a sanitary condition. All sweeping 

 must be finished before the grooming of the cows begins, 

 so that the air may be free from dust at the time of milking. 



There should be an adequate supply of warm and cold 

 water and the necessary wash basins, soap, and towels. 



3. Water Supply. The whole premises used for dairy 

 purposes, as well as the barn, must have a supply of water 

 absolutely free from any danger of pollution with animal 

 matter and sufficiently abundant for all purposes and easy 

 of access. 



4. The Cows. No cows will be allowed in the herd 

 furnishing certified milk except those which have success- 

 fully passed a tuberculin test. All must be tested at least 

 once a year, by a veterinarian approved by the milk com- 



