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. 
Fic. 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. 
