562 Tuberculosis. 



short, weak cough. Later on the animal is easily exhausted 

 after work, and symptoms of "heaves" make their appearance. 

 In some cases there is slight mucous or muco-purulent nasal 

 discharge which may also be intermittent. The discharge may 

 be streaked with blood or there may be epistaxis. Sometimes 

 it may be very profuse and consist of almost pure pus. In 

 the act of coughing similar secretions and occasionally necrotic 

 particles of lung tissue are discharged from the mouth. Per- 

 cussion of the thorax usually reveals nothing abnormal and 

 auscultation usually reveals nothing except rough vesicular 

 breathing or, in addition, toward the end of expiration, fine 

 rales. Occasionally areas of dullness or an extensive but sub- 

 dued tympanitic percussion sound without respiratory bruits 

 or with bronchial bruits may be recognized in the posterior 

 borders of the lungs (Goedecke, Zuern). In rare cases symp- 

 toms may be observed that point to breaking down of lung 

 tissue and cavity formation. Sometimes a pleuritis with a 

 tendency to latent development accompanies the affection of 

 the lung proper. There are friction sounds and fibrinous exu- 

 date which later becomes serous. At a later stage there is loss 

 of appetite and coincident with this a gradual or rapid develop- 

 ment of extreme anemia and emaciation. 



In tuberculosis of the pharyngeal lymph glands Stiennon 

 observed dysphagia, moist cough, muco-purulent nasal dis- 

 charge, sensitiveness of the pharyngeal region and rattling ex- 

 piration. 



Tuberculosis of the intestines and mesenteric glands is 

 more frequent, especially in colts, but presents no characteristic 

 symptoms. The affected animals are in a bad state of nutrition, 

 develop poorly, the flanks are drawn in, the abdomen is pen- 

 dulous or, on the contrary, "tucked up." There may be oc- 

 casional slight symptoms of colic; defecation is irregular, con- 

 stipation alternating with diarrhea, the latter finally becoming 

 chronic and leading to exhaustion of the patient. The feces, 

 especially when large intestinal ulcers are present, are thin in 

 consistency, yellowish and ill smelling. Eectal examination may 

 enable us to demonstrate the greatly enlarged lymph glands 

 which appear as tumors the size of a man's fist, firm, nodular 

 and movable. Similar structures may be felt below the spinal 

 column near the kidneys as well as in the liver and the spleen 

 (Zuern), a form of so called tabes mesaraica. 



According to Nocard and Groedecke a comparatively com- 

 mon symptom, especially of tuberculosis of the abdominal 

 organs, is that of polydypsia and polyuria. The quantity of 

 urine may, for weeks at a time be increased four-fold and then 

 resemble that of the carnivora in having an acid reaction. Uric 

 acid is present in large quantity while hippurie acid is dimin- 

 ished or disappears entirely.' During febrile attacks the urine 

 contains also albumen. 



