Accidents and Operations, 3( 



The age of the animal, the enormous obesity, and wej 

 condition of the heart precluded the administration 

 chloroform, and the usual method of reduction : so I h£ 

 a suitable truss applied, which the patient continues i 

 wear. 



FISTULA. 



Fistulae, or sinus wounds, occur in different position 

 but are all, more or less, due to some local irritation, ver 

 often abscess, and present the same structural characte 

 i.e., a narrow constricted passage lined by thickene 

 membrane, which secretes a variable unhealthy puruler 

 discharge. 



Fistula in ano has already been described in Chapter \ 



A troublesome form of fistula is that affecting th 

 lachrymal apparatus {Fistula Lachrymalis), which mos 

 frequently originates in some persistent obstruction in th 

 nasal or lachrymal duct. In 1886 I received a case of thi 

 description into my hospital. The external opening wa 

 about an inch and a half below the eye, through which th 

 lachrymal secretion freely passed. The treatment consistei 

 in astringent injections, and the application of nitrate c 

 silver, — the process of healing occupied seven week; 

 Sometimes it is necessary to slit up the canaliculus, ani 

 maintain for a period an open wound. 



Fistula Parietal Abdoniinalis may result from a: 

 imbedded thorn or other punctured wounds, or abscess 

 Last year a Yorkshire terrier was brought to me for advic^ 

 as to an old standing sore which the animal persistentl; 

 licked. An examination revealed a fistulous wound in thi 

 abdominal parietes. The opening was opposite and abou 

 an inch to the left of the prepuce, the sinus running back 

 wards for some three inches, and obliquely towards thi 

 penis. The treatment consisted in a free incision of the 

 sinus, carried backwards from the opening, and the sub 



