3o 



itrm th« unsoundness •produced by that con- 

 traction. 



A running thrush, if long neglected^ will 

 sometimes terminate in a canker, destroying 

 the laminated fibres between the outward sur- 

 face of the foot, and the inward surface of the 

 hoof. When the disease has arrived at this 

 height, the cure is Ixtth tedious and chfficuit, 

 and frequently a considerable part of the walk 

 of the hoof are obliged to be cut away. There 

 can be no hesitation,, therefore, in deciding 

 that a canker in the hoof constitutes un- 

 soundness. 



CORNS 



Arise in the lieels of the hoof, genera^lly on tine 

 hiside quarter. They are discovered by a par- 

 tial redness and softness in that part of tlie 

 heel. They are very troublesome, and are 

 seldom radically cured. Horses, with hot and 

 dry feet, are most subject to them, and they 

 are generally brought on by bad shoeing. If 

 the shoe be too^hort im the heel, or if it remain 

 on the foot so lono- that the heel of the hoof 

 grows over it, the partial pressure will brruise 

 the heel, and produce a corn. This disease 

 makes the horse very tender-footed, and liable 

 to stumble when he treads on a hard projecting 

 substance; hence, it is cmistomary to shoe the 

 aaimal with jbar-shoes, so thiit tlie labels and 



y 



