1 84 TUBERCULOSIS 



In tuberculosis of the luugs, it may be said that coughing 

 is the most noticeable symptom. It is most common after 

 feeding, drinking, or after rapid moving following a period ot 

 repose, but sometimes it occurs without any apparent cause. 

 The cough is usually strong, dry and frequently of a high 

 pitch. Sometimes it is very violent, accompanied by protru- 

 sion of the tongue. Auscultation reveals modified and abnor- 

 mal sounds of different kinds in the lungs ; sibilant, sonorous 

 and mucous rales are most common. A dull sound is often 

 detected on percussion. It is also to be noted that this condi- 

 tion is of slow development and long duration, thus aiding one 

 to distinguish it, in many cases, from bronchitis or pneumonia. 



Where the mediastinal lymphatic glands are enlarged and 

 press upon the esophagus, it is stated that the animal bloats 

 habitually. Chronic or habitual bloating accompanied by a 

 good appetite and no other evidence of disease of the digestive 

 tract, especially if there is shortness of breath and cough, 

 may be looked upon as strongly indicative of tuberculosis with 

 enlarged mediastinal lymphatic glands. Enlarged tubercular 

 glands along the esophagus may press upon that organ caus- 

 ing obstructions and preventing the escape of gases from the 

 stomach. This often gives rise to lymphangitis. 



Sometimes large tubercular masses develop on the pleura. 

 In such cases the principal symptom is a friction sound that is 

 heard most distinctly during inspiration. If the masses are 

 large enough they give rise to a dull sound upon percussion. 

 In tuberculosis of the stomach and intestines, digestion is 

 interfered with. This gives rise to poor appetite, frequently 

 to diarrhea and sometimes to alternation of diarrhea and con- 

 stipation. In tuberculosis of the peritoneum or of the lin- 

 ing of the abdominal cavit}^ the lymphatic glands of the 



the tube with a sterilized paper cap. The white bottle caps of the drug- 

 gist aje verj' serviceable." 



While the tuberculous material is perfectly fresh (uncontaminated) 

 and in the early stages of the disease, it is safer to inoculate a guinea 

 pig, and after the lesions begin to develop to chloroform it and make 

 the cultures from the recently affected liver or spleen. 



