TRACHEOTOMY. 



481 



Fig, 422.— Tube of Dieterichs; 

 posterior view. 



Fig. 423.— Qowing's Tracheotomy Tube. 



Fig. 424.— Spooner'B Traclieotomy Tube. 



either case the animal is, if possible, kept on his feet, with the head 

 elevated by a twitch apphed on the lower lip. It may sometimes 

 be necessary to place him in stocks ; to hobble his fore legs, or 

 perhaps only to raise one of the fore feet. In some instances the 

 patient is unable to stand, and, in fact, is already down when the 

 surgeon is called, and this is probably one of the only conditions 

 when the longitudinal incision is fully justified. 



Classical Method. — This includes three steps, the object of 



