64 OF THE DISEASES 



Nail- 67. Nail-bound is the name given to a slight 



bound. ... 



lameness or tenderness arising from the nails being 

 driven too " coarse," that is, too near, but not into 

 the quick. Removal of the shoe and rest for two 

 or three days will give the necessary relief. If 

 driven into the quick, the injury amounts to that 

 which has just been treated of under the head 

 of "pricking." 



Corns. 68. A corn is simply a bruise, or other such 



injury of the sensitive sole, in the angle between 

 the crust and its reduplication at the bars. (Plate 

 No. 2, ff.) Corns are generally found on the 

 inside, because greater weight, and therefore 

 greater pressure, falls on the inside than on the 

 outside heel, except where horses turn their toes 

 in, and thereby throw their weight on the outside. 

 In such conformations, corns on the outside are not 

 unfrequent. 



The presence of a corn is easily known by the 

 reddened appearance of the sole in the angle above 

 mentioned. This redness arises from extravasation 

 from the blood-vessels of the part. A similar 

 appearance is found in other parts of the sole 

 when bruised or subjected to undue pressure. 



The immediate cause of corns is pressure, gene- 

 rally continued pressure, on the seat of corn. The 

 causes of this pressure are various. Of direct 

 causes, the most common are short shoes, the ends 



