348 



VETERINARY SURGICAL OPERATIONS 



lar tissue which must be incised and parted or else dissected 

 away before the rings are brought plainly into .the fore- 

 ground. In order to perform tracheotomy well it is r essential 



that the ring lying within the scope of the incision be plainly 

 exposed. 



Third Step. — Incising the Trachea. — Incisions into the 



Fig. 169 — Forms of Tracheal Deformity Resulting from Tracheotomy. 



trachea are made according to several different directions. 

 Two rings may be divided requiring a tube flattened from 

 side to side ; a part of two rings may be excised so as to make 

 a rounded hole, requiring the use of a small, round tube ; or a 



