INFLUENCE OF DISEASE UPON MILK 79 



demonstrated. Six other children and one adult were 

 found with swelling of the cervical lymph glands, four 

 children and one adult showed symptoms indicative of 

 abdominal tuberculosis and one child suffered from 

 scrofula, but in these cases no material could be obtained 

 for bacteriological examination. Forty-one other persons 

 showed various symptoms of disease, but tubercle bacilli 

 could be demonstrated in only 4, and these bacilli were of 

 the human type. The other 304 individuals who had used 

 milk from the tuberculous udders, or products made from 

 such milk, showed no symptoms of disturbed health in 

 1910. Subsequently, one of these, a girl, developed a 

 peritonitis for which the infected milk was probably re- 

 sponsible. While in some instances the milk was heated, 

 mixed with milk from apparently healthy cows, or only 

 a small quantity was used in tea or coffee, nevertheless the 

 results of this investigation would indicate that a con- 

 siderable amount of infectious material and favorable 

 accessory conditions are required to infect man with 

 bovine tuberculosis. But, as Weber himself has pointed 

 out, it must be remembered that it is not known positively 

 that the individuals manifesting symptoms suspicious of 

 cervical lymph gland and abdominal tuberculosis were 

 not actually infected, nor how many of the apparently 

 healthy persons concerned were affected with lat- 

 ent tuberculosis which may later, under some debilitat- 

 ing influence, become active and progress to a fatal 

 termination. 



Furthermore, Weber's observations are not confirmed 

 by others who have studied the frequency of the trans- 

 mission of bovine infection to man by milk. A. comparison 

 of the occurrence of tuberculosis in breast-fed children 



