44 ROARING IN HORSES. 



anterior edge is detached from above to 

 below. 



For the favourable execution of this third 

 part of the operation, the cartilage should 

 be tightly held by double tenacula or long 

 forceps with corrugated points, the lower 

 border and the external face is dissected on 

 turning it towards the middle line ; it should 

 be drawn backwards and upwards to divide 

 the mucous membrane from its anterior edge. 

 The only important rule is to hold the 

 points of the scissors always in contact with 

 the cartilage, to glide over it, to damage 

 the mucous membrane as little as possible. 

 The same may be said with respect to the 

 laryngeal ventricle, and the tissues detached 

 from the external face of the arytenoid. If 

 this is carried out there is not the least 

 danger in opening the ventricle. Towards 



