128 DISEASES OF THE HORSE'S FOOT 



We do not here intend to deal at any length with the 

 arguments for and against the Charlier as regards its adop- 

 tion for general use. These will be found fully set out in 

 any good work on shoeing. 



The point that it is correct in theory it would be idle to 

 attempt to evade ; but that it is generally practicable, 

 or that it offers any very pronounced advantages, as com- 

 pared with the disadvantages urged against it, over the 

 shoes in ordinary use, the limited favour it has drawn to 

 itself, since its introduction in 1865, seems sufficiently to 

 deny. 



(c) By the Use of a Bar Shoe. — Where the frog is not 

 excessively wasted benefit will be derived from the use of a 

 bar shoe. 



Fig. 68. — Bar Shoe. 



The transverse portion at the back, termed the ' bar,' 

 and which gives the shoe its name, is instrumental in 

 bringing about from below that counter-pressure on the 

 frog that we now know to be so necessary a factor in 

 remedying contraction. When the frog, by wasting or 

 disease, is so deficient as to be unable to reach the * bar,' 

 this shoe must be supplemented by a leather or rubber 

 sole. 



In the event of corn or sand-crack existing with the 

 contraction, the shoe known as a ' three-quarter bar ' is 

 preferable (see Fig. 103). The break here made in the 

 contour of the shoe allows of dressing the corn, and, in the 

 case of sand-crack, removes the bearing from that portion 

 of the wall. 



