126 DISEASES OF THE HORSE'S FOOT 



shoe, the application of a tip is simple. In reality, the tip 

 is just an ordinary shoe shortened by truncating the heels. 



Before applying the tip, the horn of the wall at the toe 

 should be shortened sufficiently to prevent any undue 

 obliquity of the hoof, and the foot should be so prepared as 

 to allow the heels of the tip to sink flush with the bearing 

 edge of the wall behind it. 



When the foot does not allow of the removal of much 

 horn at the toe, what is termed a ' thinned ' tip is to be 

 preferred. Its shape is sufficiently shown by the accom- 

 panying figure (Fig. 65). 



With the tip the posterior half of the foot is allowed to 

 come into contact with the ground, and the object we are 



Fig. 65.— The Thinned 

 Tip. 



Fig. 64.— The Tip Shoe 'let in' 

 the Foot. 



striving for — namely, frog pressure, and greater facilities 

 for alternate expansion and contraction of the heels — is 

 thus brought about. 



(b) By Shoeing with the Charlier. — The results brought 

 about by the use of a tip may be arrived at by the applica- 

 tion of a Charlier or preplantar shoe, or by a modified 

 Charlier or Charlier tip. 



Briefly described, a Charlier is a shoe that allows the 

 sole and the frog to come to the ground exactly as in the 

 unshod foot. This is accomplished by running a groove 

 round the inferior edge of the hoof by removing a portion 

 of the bearing edge of the wall with a specially devised 

 drawing-knife. 



