Roaring ; its Cause. 245 



times happens, this disease has been of the 

 character to threaten suffocation, the part sup- 

 posed to cause the difficulty of breathing by ob- 

 structing the passage of the air has been cut 

 down upon, and a portion of one of the rings 

 of the windpipe cut out and a breathing tube 

 inserted. This is one of the first operations I 

 ever recollect seeing my deceased father perform ; 

 this was cutting a horse's throat to save its life. 



