ROARING IN HORSES. 31 



tracheotomy tube may be used, but the canula 

 should be covered with aseptic gauze, fixed 

 by means of two Hgatures. 



6. A bent needle with the eye close to 

 the point, and provided with a metal handle 



(fig- 15). 



Fig. 8.— Plug or stopper canula with ampullae or bellows attached. 



Beyond these it is necessary to have a pair 

 of long, straight scissors, ordinary curved 

 scissors, anatomical and artery forceps, 

 sponges fixed to the teeth of bolted forceps, 

 needles, two sizes of catgut, and silk or 

 thread, wadding, carbolised gauze (Lister's), 



