230 CORNS. 



Standing upon plank-floors lias also a tendency to produce it, 

 as it absorbs the moisture of the hoof, and renders it brittle and 

 liable to crack. Traveling upon hard stony roads, with shoes 

 that are beveled inwards, also predisposes the feet to this dis- 

 order. 



The treatment must, necessarily, be slow in its operation ; yet 

 by careful management it is sure. The shoes must, in the first 

 place, be removed, and the feet well poulticed for several days 

 until the hoof and frogs become perfectly soft. The animal 

 should then be carefiJlly shod, as heretofore directed; apply 

 daily, until the heels are fully spread, the following ointment ; 

 of rosin, four ounces ; beeswax, four ounces ; lard, two pounds ; 

 tallow, one pound ; melt together, and, when cool, stir in four 

 ounces of oil of turpentine. 



CORNS. 



The first effect of contraction of the hoof is to bruise the sen- 

 sitive parts within their horny limits at that part of the foot 

 formed by the crust and bar, causing lameness, which may be 

 acute or chronic. These bruises are commonly called corns. 

 The reason why this portion of the foot should be so severely 

 bruised is obvious. The crust and bar forming a triangular space 

 between which a considerable portion of the sensitive laminae lie, 

 this bar by its resistance of the encroachments of the crust, causes 

 a twofold pressure upon the sensitive parts, acting much as 

 a vice, and thereby diminishing the triangular space. Upon 

 examination of the foot the horn is found hard, dry, and brittle, 

 with a Ktroiif^ tendency to crack on very slight concussion. On 

 removing a portion of the horn at the part of the foot indicated, 

 the parts are found to be contused, sometimes slightly, and at 



