INFECTIVE (iRANULOMA IN A MARE. 52 1 



due to the growth of new fibrous tissue, which was of a dense nature, 

 feehng almost Hke hard india rubber, and of a pecuhar dirty yellow 

 colour. 



Sections were made of various portions of the different organs, and 

 the new growths ascertained to be composed of dense fibrous tissue. 

 The appended photographs show the microscopical appearance of the 

 lung and stomach. At first the case was regarded as due to actinomyces 

 or botryomyces ; but, although sections were stained by every conceiv- 

 able method, Mr. Gilruth failed to demonstrate to his own satisfaction 

 any organism that might be looked upon as the cause of this peculiar 

 condition. The caseous foci, where sections were stained with carbol- 

 fuchsin and decolourised with picric acid, showed a few small points 

 which retained the red stain, but it was doubtful whether these were 

 even parasitic in nature. 



In the photograph of the lung the intensity of the periarteritis and 

 peribronchitis will be observed, as also the sharp line of demarcation 

 between the fairly healthy and diseased tissue ; and in that of the 

 stomach the spread of the round-cells between the altered gastric 

 glands, with the dense fibrous tissue underneath, will be noted with 

 interest. 



Mr. J. A. Gilruth's case, Veterinarian, 1900, p. 298. 



