564 Tuberculosis. 



observed. This is cliaracterized by high fever, excessive 

 dyspnea and by a rapidly fatal course. The lungs give a 

 tympanitic percussion sound and vesicular bruits upon auscul- 

 tation (Goedecke). 



Tuberculosis of Swine. During life the disease can be 

 definitely recognized only when the lymph glands are involved 

 (scrophulosis). In pronounced cases the submaxillary, pharyn- 

 geal and cervical glands are excessively enlarged and, through 

 confluence, constitute firm nodular tumors as large as a fist. 

 They are very sensitive to pressure and more or less adherent 

 to the surrounding tissues. This process is attended with the 

 development of a diffuse swelling in the parotid region which 

 interferes with the free movement of the head and lower jaw. 

 These tumors may extend along either side of the neck in rosary 

 fashion and additional tumors may be present in the prepectoral 

 region. Swelling of the lymph glands of other regions of the 

 body, especially those of the flexor surfaces of the extremities 

 may also be present. Some of these tumors may become fluc- 

 tuating, break open and discharge a thick purulent or cheesy 

 mass. This results in the production of a fistula which dis- 

 charges cheesy-purulent secretions for a long time. Spon- 

 taneous healing does not take place. 



Tuberculosis of the abdominal organs, especially as a pri- 

 mary affection in young pigs manifests itself in slowly develop- 

 ing but steadily increasing impairment of digestion. The af- 

 fected animals gradually lose their normal vigor and liveliness, 

 their tails lose the curl, the back is humped, they stand around 

 listlessly or bury themselves under the bedding for hours at 

 a time. The appetite is at first impaired, the animals selecting 

 only choice morsels and later refusing all food. Constipation 

 and diarrhea alternate and during the latter ill smelling semi- 

 fluid feces mixed with crumbly material are discharged. Now 

 and then there is bloating caused by the accumulation of gases in 

 the intestines. Later on the flanks become hollow, the abdomen 

 becomes pendulous and the lower portion increased in its trans- 

 verse diameter. If the animals are handled they evince signs 

 of pain, the enlarged scrophulous lymph glands, and the loops 

 of intestines which have become adherent by inflammatory 

 process may occasionally be felt as firm irregular swellings. The 

 animals become more and more emaciated, the mucous mem- 

 branes become pale and the eyes are drawn into their sockets. 

 Here and there the skin is covered with brown crusts. The 

 weakness constantly increases until exhaustion leads to death 

 after several months of illness. 



In tuberculosis of the lungs there is at first a dry, short, 

 suppressed cough as well as moderately accelerated and difficult 

 breathing. In the course of time the cough becomes more fre- 

 quent and distressing and is sometimes attended with vomiting. 

 In the further course of the disease the respiratory difficulties 

 become excessive, the animals sit on their haunches and, with 



