INSTEUMEXTS AND APPARATUSES. 483 



to go into a wooden handle. It is used by some in treating 

 spavin, ring-bone, calluses, etc. 



Syringes. — These are well-known instruments. In giving 

 the horse injections, the largest sja^inge should be used, or 

 some of the patent ones, which do not have to be withdrawn 

 during the operation. Smaller syringes are used for injecting 

 abcesses, etc. 



Probes. — These are made of silver. A piece of wire, with 

 the end made smooth and rounded, makes a good probe. 

 The probe is used for ascertaining the depth and direction 

 of wounds, and if any thing is in them. They are very 

 useful. 



Catheters. — These are long, round, gum-elastic tubes, with 

 one end open and rounded at the other to a point, near which 

 are two openings. They may be used for injecting fluid into 

 deep ulcers. Introduce the catheter and then the mouth of the 

 syringe into the open end of the catheter, and throw the liquid 

 into the wound through it. A large catheter is used for draw- 

 ing oif the water, when the horse is unable to pass it. 



JRoioels. — Cut a ring of leather about an inch, or over, in di- 

 ameter, leaving the rim of the ring about one-fourth of an inch 

 broad. Wrap it with flax or hemp, or thread will do. A hole 

 is cut in the skin, and the skin loosened in a long pocket, two 

 or three inches down. The rowel is then moistened with Venice 

 turpentine and passed down to the bottom of the pocket. The 

 next day it will commence running. It is to be left in until it 

 accomplishes the object or quits running. 



Setons. — A seton is a cord, or bundle of thread, drawn 

 through a portion of the skin or flesh, and the ends being tied. 

 The seton is smeared with turpentine. A seton is introduced 

 with the seton-needle. Its object is to keep up a discharge of 

 matter and reduce inflammation. 



Tents. — Plugs, or pledgets, of tow, lint, or leather or wire 

 wrapped with tow, make good tents. They are introduced 

 into wounds or sores, to start tlieni to mattering, and to make 



