CERTIFIED MILK 



491 



The beneficial influence of certified milk has been twofold. 

 In the first place, a milk of the highest quality becomes available. 

 In the second place, the moral and educational influence is con- 

 siderable. It has been clearly shown that a clean milk with less 

 than 10,000 bacteria per cubic centimeter can be obtained and 

 that the herd can be kept free from tuberculosis and other infec- 

 tions. Menace from pathogenic bacteria has been greatly reduced 

 as a result of periodic medical examination of employees and 



Standard Automatic j 

 Capping Machine 



Fig. 197. Standard automatic capping machine. 



veterinary inspection of the animals. Sanitary inspection of cer- 

 tified milk plants has been so successful as to materially reduce the 

 chances of infection. In the 33d Annual Report of the State 

 Board of Health of New Jersey (1909) an account is published 

 which shows how much can be done by a competent, vigilant milk 

 commission to suppress imminent danger of infection. In the 

 dairy in question the medical examiner of the commission found 

 one of the employees with an erythematous rash. This employee 



