396 



INFECTIVE DISEASES. 



not any trace of tubercular disease in other parts ; thus pointing to 

 the intestine as the channel by which the bacillus made its way into 

 the body. Woodhead also remarks that in a large number of cases 



Fig. 174.— TtiBEKcutosis of the Lungs. 



From a photograph of the lungs of a rabbit which had been injected sub- 

 cutaneously with about ten drops of milk, including in suspension a small 

 quantity of the deposit at the bottom of a sample of milk from a cow with 

 tuberculosis of the udder. Death occurred from general tuberculosis ninety-two 

 days afterwards. The appearance of the lungs was very striking. They were 

 almost completely composed of tubercular deposit. The bronchial glands, 

 as well as the tracheal, of which one is seen in the photograph, were also 

 enlarged and caseous. There were tubercular deposits in the kidneys and 

 other organs, and also at the seat of inoculation. 



of general tuberculosis, where the possibility of infection by the 

 pulmonary passages was evidently excluded, the tubercular process 



