244 BOVINE PATHOLOGY. 



by the elevation of the muzzle. The probang, then, with 

 its cup-shaped end foremost, is passed through the opening 

 in the gag under the pendulous palate, carefully over 

 the epiglottis, which it forces downwards somewhat, and so 

 into the oesophagus. Sometimes slight taps with the heavy 

 end of the probang serve to start the body forwards. A 

 little oil may be introduced through the tube by removal 

 of the stilette. Thus, also, the gas can be drawn off when 

 the bulb enters the rumen. 



The Forceps Prohang of Professor Simonds serves to 

 grasp the root, and so to accomplish its withdrawal. It is 



Fia. 43. — The Grasping or Forceps Probaug of Piofessor Simonds. 

 (Armatage.) 



furnished at the top end with a screw-handle, at the 

 other with a pair of spring forceps, the latter being drawn 

 into the bulb when the instrument is passed and secured 

 by a check and screw to the other end. The forceps 

 are serrated on their inner surface, and their edges are 

 made somewhat tapering, for the purpose of passing readily 

 between the root and the side of the oesophagus. The bulb 

 being brought in contact with the root the screw check 

 is removed and the forceps expanded and turned in 

 different directions to grasp the root. That the obstruc- 

 tive is grasped is indicated by the stilette not being 

 entirely withdrawable. 



The Corkscrew Prohang of Lord is so arranged that, 

 when a foreign body is reached, a corkscrew can be in- 

 troduced into it, with the result either of bringing about 

 its withdrawal or lessening its cohesion. In the latter 

 case, after being punctured in several places, the root may 

 break up and pass readily into the rumen. The screw 

 terminates the stilette ; it can be retracted into the tube 



