528 



CLINICAL VETERINARY MEDICINE AND SURGERY. 



Sometimes its parenchyma is filled with small granulations ; sometimes 

 it contains large tuberculous areas. 



In all our observations of " spontaneous " tuberculosis the kidneys 

 and lungs remained unaffected. 



In about half the cases the intestinal mucous membrane showed 

 either small tubercles, or ulcerations of greater or less depth. The 

 latter lesions, which indicate the point of entry of infection, also serve 

 to propagate the disease ; examination of the intestinal contents several 

 times resulted in the discovery of bacilli. 



We should also mention the occurrence of tuberculous lesions in 



Fig. 76. — Tuberculosis of the liver (fowl). 



the subcutaneous connective tissue, in bones, articulations, and peri- 

 articular tissues, a condition which, according to Friedberger and 

 Frohner, is fairly frequent. We saw a remarkable case of tuberculous 

 arthritis of the femoro-tibial articulation. The lesion occurred in a 

 fowl dead of spontaneous tuberculosis, and was extremely rich in bacilli. 

 Tuberculosis of the pheasant and of the fowl are practically indis- 

 tinguishable to the naked eye, but on applying iodine solution the 

 tubercles in the pheasant assume the mahogany coloration charac- 

 teristic of amyloid degeneration. 



Histology. — Histologically the lesions in the fowl and in the phea- 

 sant vary to a marked extent. This was shown by microscopic exa- 



