44 FISTULAS. 



SALIVARY FISTULA ; which sometimes occurs in the 

 salivary duct, where it passes round the edge of the 

 posterior jaw. 



FISTULA of the WITHERS ; which is situated where 

 the neck and back unite, and is of the most formida- 

 ble character, and may even endanger the life of the 

 animal, from the pus sinking down and extending to 

 vital parts beneath. 



DENTAL FISTULA, on the lower border of the low- 

 er jaw, sometimes on the outer surface, is frequently 

 very painful, so that the animal refuses to eat and 

 grows thin. 



The above are the more common forms of Fistula, 

 and the general character, causes, and treatment, are 

 much the same, wherever located. 



CAUSES. In almost all cases, Fistulas are the 

 result of some external injury, such as a blow, strain, 

 chafing, pressure, etc , which, acting upon some dys- 

 crasia or predisposition of the system, results in in- 

 flammation, suppuration, abscess and subsequent bur- 

 rowing to a fistulous opening. 



TREATMENT. In case there is heat and feverish 

 irritation, the FEVER SPECIFIC A A, should be given 

 a few times, in doses of fifteen drops, three times per 

 day, after which the Specific for ULCERS, FISTULAS, 

 etc ,1 I, should be given, in like doses every night 

 and morning, except that in very old cases one dose 

 every day is better. 



In cases where the canal is long and crooked, or 

 runs into cavities of pus, it must be laid open with 

 the scalpel, so as to heal from the bottom. This is 

 best done by passing a grooved probe along the canal 



