THE ROARING OPERATION 59 



unilateral or bilateral. Inject with the hard rubber syringe 

 with a long pipe into the larynx and laryngeal ventricles or 

 introduce by means of swabs of cotton held in uterine dress- 

 ing forceps, a suBacient quantity of the local anaesthetic and 

 adrenalin to blanch and anaesthetize the mucosa. The 

 ventricles are more conveniently injected if the syringe 

 nozzle is bent near the tip. 



FIG. 20 



The ventricles commonly contain some mucus, which in- 

 terferes with the securing of the mucosa and should be taken 

 up and removed by means of a small piece of absorbent 

 cotton pressed into the ventricle with the long curved dress- 

 ing forceps. 



When the ventricular mucosa has been effectively anaes- 

 thetized and any mucus removed, introduce the soft rubber 

 burr wrapped with a single thickness of heavy, dry cheese- 



