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of tuberculosis has been proven by numerous accidental or 

 natural and artificial cases of transmission. A few typical 

 cases will be given illustrating the transmissibility from 

 man to animal, from animals to man, from man to man and 

 from animal to animal. 



(1) The writer knew a family, of which nearly every member died 

 of tuberculosis. This family's herd of milch cows nearly all died of 

 tuberculosis. The disease first appeared in the family ; later in the 

 herd of cattle. 



(2) Three Grecian physicians injected tuberculous sputa into the 

 thigh of a fisherman whose death from another disease was inevita- 

 ble. His lungs previous to the inoculation were sound and his family 

 was free from any taint of tuberculosis. In three weeks his lungs 

 exhibited symptons of disease and at death (38 days after the inocu- 

 lation) seventeen tubercles were found in his right lung, two in his 

 left and two in his liver. 



(3) Tappiener was trying to produce tuberculosis in dogs by 

 forcing them to breathe air, artificially infected with tubercle bacilli. 

 His servant, disbelieving in the danger, persisted in going into the 

 infected inhalation rooms. In fourteen weeks he died from acute 

 tuberculosis ; and at the post mortem exhibited the same pathologi- 

 cal lesions as those found in the dogs. 



(4) A servant, in removing a glass sputum cup broke it and punct- 

 ured her finger with a splinter of glass. In the course of time it be- 

 came necessary to amputate that finger, when it was found to be 

 filled with small tubercles. 



(5) Dr. Stang, of Amorbach, reports a case, in his practice, of a 

 five year old boy, after an illness of a few weeks, dying of acute 

 miliary tuberculosis. Previous to his sickness he was healthy and 

 well developed, and entirely free from any hereditary tendency to 

 tuberculosis. A short time previous to his death the family cow was 

 killed and found to have a severe case of pulmonary tuberculosis. 



(6) Dr. Demme, of Berne, reports that four infants, in the Child's 

 Hospital, died of intestinal and mesenteric tuberculosis. They were 

 free from tuberculous taint, but had been fed on unsterilized milk 

 from tuberculous cows. 



(7) Hills and Rich state that a grandson of Henry Ward Beecher 

 died from tuberculous meningitis. The child had no hereditary pre- 

 disposition. The physician suspected the cows, from which the boy 

 was supplied with milk. The tuberculin test and the post mortem 

 examination showed that the two cows were tuberculous. 



