CORN. 483 



a bar-shoe, so made that at the toe it remains open or unjoined 

 together, the interval left being of sufficient width to receive 

 the crack in front of the hoof, is perhaps the best. Binding 

 the hoof up with circles of wax-end, as in the case of quarter 

 sandcrack, with some adhesive plaster and dressing underneath 

 it, will also now become advisable. It will restrict the expanding 

 inclination of the hoof, as well as keep dirt and wet out of the 

 crack. Repetition of this, and the continuance of the bar-shoe, 

 will be required so long as there appears any risk of extension 

 or renewal of the crack. 



Corn. 



We have seen that contraction, out of which results sandcrack, 

 is a product of shoeing : another disease ascribable to the same 

 cause is corn. 



The Name of com no doubt has been borrowed from human 

 medicine ; perhaps because pressure was found to be the cause, 

 or, it might be, because there are corns in the horse over which 

 the horn grows exceedingly thick, the same as the cuticle does 

 over our own corns. So far identity of name is warranted ; but, 

 if the comparison be carried further than this, misconception 

 will certainly result : corn in a horse being, pathologically re- 

 garded, quite a different disease from human corn. 



Definition. — A corn consists in contusion of the sole of the 

 foot, producing ecchymosis or extravasation of blood, which 

 permeates the pores of the horn, and turns it red; or it may 

 consist in a collection of purulent matter in the part, in which 

 case it is denominated 2i festered corn. 



The Seat of Corn is commonly the angle of the sole of the 

 fore foot; — the angle meaning the part included between the 

 heel of the wall and the bar ; — and the inner angle is more fre- 

 quently its seat than the outer ; reasons for which predilections 

 will be given hereafter. A contusion in any part of the sole is, 

 pathologically speaking, a corn, though we are not in the habit 

 of so calling it. The French veterinarians have different names 

 to denote the two kinds of corn : they call our proper corn 

 bleime, while the other they designate foalure. In fact, aho- 

 gether, they distinguish four different corns : — the foidure, or 



