48 PRINCIPLES AND PRACTICE OF MILK HYGIENE 



medical inspection of a qualified physician, under sanitary con- 

 ditions such that the bacterial count shall not exceed 100,000 

 per cubic centimetre at the time of delivery to the consumer. It 

 is recommended that dairies from which this supply is obtained 

 shall score at least 80 on the United States Bureau of Animal 

 Industry score card. 



Pasteurized Milk. Milk of this class shall come from cows 

 free from disease as determined by physical examinations by a 

 qualified veterinarian and shall be produced and handled under 

 sanitary conditions such that the bacterial count at no time ex- 

 ceeds 200,000 per cubic centimetre. All milk of this class shall 

 be pasteurized under official supervision, and the bacterial count 

 shall not exceed 10,000 per cubic centimetre at the time of 

 delivery to the consumer. It is recommended that dairies from 

 which this supply is obtained shall score at least 65 on the 

 United States Bureau of Animal Industry score card. 



The above represents only the minimum standards under 

 which milk may be classified in Grade A. The commission recog- 

 nizes, however, that there are grades of milk which are produced 

 under unusually good conditions, in especially sanitary dairies, 

 many of which are operated under the supervision of medical 

 associations. Such milks clearly stand at the head of this grade. 



GRADE B 



Milk of this class shall come from cows free from disease 

 as determined by physical examinations, of which one each year 

 shall be by a qualified veterinarian, and shall be produced and 

 handled under sanitary conditions such that the bacterial count 

 at no time exceeds 1,000,000 per cubic centimetre. All milk of 

 this class shall be pasteurized under official supervision, and the 

 bacterial count shall not exceed 50,000 per cubic centimetre 

 when delivered to the consumer. 



It is recommended that dairies producing Grade B milk 

 should be scored and that the health departments or the con- 

 trolling departments, whatever they may be, strive to bring 

 these scores up as rapidly as possible. 



