92 



SHOE CONCATE UPON STIKrACE. 



In concluding under this head, I may repeat, that the 

 amount of paring and rasping must be regulated by the growth 

 of the horny substance ; but under no conditions (save those of 

 disease) are the frog or the bars to be pared, nor is the surface 

 of the hoof to be rasped, beyond the extent stated above. 



Shoe to be made Concave upon the Poot SrsrACE.— 

 The importance of the shoe being dished, or made concave upon 

 its foot surface, vriU be obvious to the reader if he reflects upon 

 the facts already detailed respecting the organization of the 

 hoof. It has been explained that the sole of a properly formed 

 foot is concave or vaulted ; consequently the weight of the animal 

 has to be entirely supported by the crust ; and to this crust 

 the shoe must necessarily be attached. Thab part of the hoof 

 which naturally receives and supports the weight of the 

 animal, should be that to which the protecting medium ought 

 to be secured. 



Figwre 12, shewing the pro- 

 per form of the shoe, or as it 

 should he before being nailed 

 to the lioof. 



aaaa The bearing surface of 

 the shoe. 



666 The concave or dished 

 part, made so as to 

 prevent the shoe 

 from pressing upon 

 the sole of the foot. 



Mg. 12. 



The proper form of the foot surface of a shoe is shewn in 



Figure 12 ; aa, called the bearing surface, is the part made level 



to receive the crust ; lb is the dished or concave part. As a 



rule for the guidance of farriers, a fore foot shoe ought to be 



