442 VETERINARY SURGICAL OPERATIONS 



The cutaneous incision is made over the cyst parallel to the 

 axis of the false nostril. To facilitate access to the entire cir- 

 cumference it should overlap the enlargement above and be- 

 low, and be held apart with the retractors. Hsemostats are 

 applied to spurting vessels, which are numerous, and when 

 the dissection is complete a painstaking hasmostasis is ef- 

 fected by torsion and then by packing the cavity firmly but 

 not tightly with iodoform gauze. The cutaneous incision is 

 then closed by three mattress sutures one-half inch from each 

 edge, and interrupted sutures placed close together along the 

 margin. These are clothed with collodion. 



Twenty-four hours later the packed cavity is incised with- 



Fig. 226— Atheroma of the False Nostril. (Bayer.) 



in the false nostril and the gauze removed; or the gauze may 

 be pulled into the new incision with the forceps and allowed 

 to sojourn another day, at the end of which time a good 

 drainage orifice requiring no further attention will have been 

 provided. The sutured incision heals by primary union and 

 the cavity which discharges its secretions into the nostril 

 cicatrizes rapidlv. 



Operation for Anal Atresia 



Anal atresia is only amenable to surgical correction when 

 the blind extremity of the incomplete rectum approaches 

 the anus. If the rectum is wanting entirely, as is often the 



