112 MANUAL OF EQUINE MEDICINE. 



probably the irritation of the tears sets up a condition 

 suitable to the growth of the fungus. The angles of the 

 mouth are also frequently affected, and the bit may cause 

 the original injury, which afterwards takes on a bursatee 

 form. The legs, from the knee downwards, especially the 

 fetlocks and coronets, are often affected, and in these 

 situations the growth has a tendency to assume more the 

 character of bone than in other parts. The vagina, urethra, 

 glans penis and prepuce are also frequently affected. The 

 site of an old sore always affords a soil for the peculiar 

 growth in affected animals, and fresh wounds similarly 

 undergo the above changes. Cicatrization rarely or never 

 occurs spontaneously, and with the return of the season 

 there is great probability of recurrence of the disease on 

 some other part of the body. A cicatrice, if external, may 

 lead to impairment of function of the parts involved. The 

 general condition varies in bursatee, but there is usually 

 more or less debility. 



Morbid Anatomy. — The lesions of bursatee are found in 

 external wounds, in subcutaneous tissues, and in internal 

 organs, or in two or all three of these situations. They 

 may be found in the internal organs of animals which have 

 shown no signs of the disease during life. In size, the 

 growths vary from a millet seed to a filbert nut. In the 

 early stages, microscopical examination shows them to be 

 composed of two kinds of cells. One kind of cells have a 

 tendency to elongate into fibres, the other have abundant 

 nuclei and nucleoli. In the next stage the growths are 

 firmer ; the section is yellowish white. Many of the more 

 stable and less active cells have become converted into 

 fibrils, while the other cells, dispersed among them, are of 

 a brownish colour. 



This is the stage of soft kunkur. In a still later stage, 

 the tissue is harder, and the greater part of it is in a con- 



