SYMPTOMS 



187 



In tuberculous disease of the bones and joints, the parts 

 are enlarged, there is loss of motion, pain and usually abscess 

 formation followed by the discharge of thick yellow pus. 

 In tuberculosis of 

 the uterus or ovar- 

 ies and sometimes 

 in peritoneal tuber- 

 culosis of the cow, 

 the subject is al- 

 most continually in 

 heat. In tubercu- 

 losis of the uterus, 

 there is sometimes a 

 discharge of thick, 

 yellowish material 

 mixed with mucus. 

 In tuberculosis of 

 the testicles the or- 

 gans become en- 

 larged and hard. 



In all advanced 

 cases, the nutrition 

 of the animal is in- 

 terfered with and, 

 sooner or later, the 

 "tuberculous cach- 

 exia" appears. It 

 is, however, in 

 many cases remark- 

 able to note the ex- 

 tent of lesions in 

 animals that are 

 well nourished and 

 present no external 

 signs of disease. Animals killed in prime condition by the 

 butcher are sometimes found to contain extensive and widely 

 distributed lesions of tuberculosis. In general tuberculosis. 



Fig. 34. Dorsal aspect of bovine lungs showing 

 position of the posterior mediastinal glands ; 

 {a, b, c, c') caudal, ventral, cephalic lobes, (/) 

 esophagus, (g) muscular pillars of diaphragm, 

 (h) posterior aorta, {i) caudal margin of the 

 ligament of the lung. A. Left bronchial gland. 

 Mediastinal glands are shown, most of them 

 resting on the esophagus. The large caudal 

 gland resting on the pillars of the diaphragm 

 is most frequently diseased and often attains 

 an enormous size. The remaining medias- 

 tinal glands are arranged in two sets on the 

 right and left margins of the esophagus 

 {Smith). 



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