22 



quently joints become diseased, and, when opened, discharge 

 a pale yellow granular matter." 



* "1. Tuberculosis has been observed in all warm- 

 blooded animals submitted to domesticity or deprived of 

 their liberty. 2. Tuberculosis in animals and mankind 

 presents analogous manifestations, in the living as in the 

 dead creature. 3. The course and termination of the dis- 

 ease in mankind and animals is the same. 4. The masses of 

 tubercle, and especially the sputa of the phthisical, produce 

 tuberculosis in animals, when these matters are introduced 

 through the respiratory or digestive apparatus, or through a 

 deep wound. Tuberculosis, inoculated from man to animals, 

 may in its turn be transmitted from one animal to another, 

 and alwaj's produces tuberculosis. 5. Tuberculosis of man 

 and of animals is transmitted by heredity. 6. The disease 

 is contagious in man and animals. 7. There are clinical 

 observations which prove the transmission of tuberculosis 

 from animals to man, by the consumption of the milk of 

 phthisical animals. 8. Tuberculosis of animals and man is 

 rare in cold climates, where it does not even appear to be 

 developed. It is most frequent in southern countries ; the 

 tracings of the geographical propagation of the disease in 

 man and animals are nearly parallel. 9. It is evidently 

 proved that a pathogenic microbe, having the same morpho- 

 logical and biological characters, exists in the tubercle of 

 man and in that of animals. This organism, whether it be 

 developed in man or animals, may induce tuberculosis 

 when, cultivated in a pure state, it is conveyed to the animal 

 possessing the uecessary receptivity." 



Symptoms. 



f " The symptoms vary according to the seat of the deposit, 

 yet there is a constitutional condition common to all, and the 

 lungs are almost always involved in the latter stages, giving 

 rise to a great similarity of symptoms. The disease may be 

 acute but is usually chronic. The onset is insidious and 

 easily overlooked, tubercles often being found in animals 



* "Propagation of Tuberculosis," Lydtin, Fleming, Van Hertjsen. 

 t " The Farmer's Veterinary Adviser," Prof. James Law. 



