TUBERCULOSIS IN THE DOG. 



237 



53 the lesions have been confined to the thoracic, and in 12 to the 

 abdominal organs. The figures are as follows : 



The pleura, pericardium, and peritoneum are frequently the seat of 

 serous or sero-fibrinous, and sometimes purulent or haemorrhagic 

 exudation. I have seen pleurisy in ninety cases, pericarditis in twenty- 

 eight, and ascites in forty-nine. 



I have laid stress on the frequency of pleurisy as a common accident 

 in tuberculosis ; specific inflammation of the pleura, with serous or 

 purulent exudate, has been found in almost one half of the subjects 

 examined. And just as pleural inflammation is common in dogs 

 affected with tuberculosis, it is exceptional in non-tuberculous patients ; 

 so far as canine pathology is concerned, this is with me a fixed idea. 

 Examining my last fifty cases of canine pleurisy from this point of view 

 — I am now only speaking of cases in which diagnosis was checked by 

 post-mortem and bacteriological examination — I found tuberculosis to 

 be the cause in forty-one instances, that is to say in 82 per cent, of 

 cases — a proportion approximately the same as that arrived at for man 

 by the most recent researches. 



Exudative pericarditis also is usually symptomatic of tuberculous 

 infection, though, like pleurisy, it may be seen alone, without any other 

 specific localisation. 



Certain manifestations of tuberculosis in the dog are atypical, and 

 sometimes very different from those usually seen, the lesions of the liver 

 and epiploon being the most remarkable. You know that the tuber- 

 culous liver generally shows a large number of little whitish, greyish, or 



