CORNS 149 



as before. In a few days the whole surface will be 

 invested with a horny crust. 



CORNS. 



A corn is a bruise of the sensitive papilla of the 

 sole, situated betwixt the bars and the wall at the 

 heels. 



CAUSE. This disease has acquired a name which 

 but ill expresses its nature. It bears but little affinity 

 to corns of the human foot ; although, like them, 

 they are the effects of pressure. Instead of being- 

 hard as in the human subject, they are thin and 

 very weak, and caused by pressure on the sole in 

 the angle between the bars, as presented, Plate vi, 

 fig. 12, c c. The horn becomes more spongy and 

 softer than at other parts, and it is so sensitive, that 

 upon the slightest pressure the horse indicates that 

 he feels pain. 



Nothing is more injurious than to allow a shoe 

 to remain too long on, as it is sure to become em- 

 bedded in the heel of the foot ; consequently the 

 crust grows down on the outside of it, and the bear- 

 ing is thus thrown on the angular portion of the 

 sole. Continued pressure on the sole is certain to 

 induce inflammation and corns. The shoe being long 

 on, wears and gets loosened at the heels, which 

 admits of gravel between it and the crust, and 

 having accumulated in the angle it naturally 

 insinuates itself into the heel, and produces a 

 sore. 



As we have before said in another part of the 

 work, nothing can be more injudicious than to allow 

 shoes to remain too long on ; even if they are not 

 worn, they should be taken off every fourth week 

 and readjusted, to free the feet from long-continued 



