DISEASES COMMUNICABLE IN MILK 



47 



Tuberculin Testing in Hawaii. In Hawaii, in May, 1910, the testing 

 of the dairies that supply Honolulu was begun and since, every dairy on 

 the island of Oahu, producing milk commercially and those rearing cattle 

 for sale have been tested by the intradermal method. Few cases of tuber- 

 culosis were found in range cattle. Comparison of the results in Table 21 

 shows that at every test there were more reactors in the city than in the 

 country dairies. 



TABLE 21. TUBERCULIN TESTS IN THE TERRITORY OF HAWAII, 1910-11-12 

 Honolulu City Dairies 



Island of Oahu 



Tuberculin Testing in North Carolina. In North Carolina, testing 

 from 1909 to 1911 showed that the native cows are remarkably free from 

 the disease; in 1909 no reactors were found among them and the 3 years' 

 work indicates that only about 0.1 per cent, of these cows were tubercular. 

 In Table 22 the high number of reactors in 1910 occurred chiefly in im- 



TABLE 22. TUBERCULIN TESTS IN NORTH CAROLINA, 1909-1911 (CHRISMAN) 



ported cattle and in herds wherein infected cattle had been allowed to 

 stay. 



These results are very interesting for North Carolina is a State with 



