130 DISEASES OF THE FEET AND LEGS. 



the lioof under the crack to be rasped as tliin as pos- 

 sible. In vertical cracks the use of a bar-shoe will tend 

 to keep the foot together (page 80). 



Corns are occasioned by the inflexible shoe pressing 

 on that part of the sole, or possibly from friction of the 

 bones upon its internal surface. They present the ap- 

 pearance of a red efi"used bruise, almost invariably situ- 

 ated on the heel of the sole of the inside quarter of the 

 fore feet. — [See illustration, fig. 3, page 120.) 



When neglected, they occasion severe lameness, and 

 go on to suppuration. 



Broken knees are also frequently the result of ne- 

 glected corns. 



A horse that is habitually properly shod, is never 

 likely to have a corn. It arises entirely from want of 

 attention and judgment in the smith. The groom, who 

 should always stand by when a horse is shoeing, ought 

 to be instructed to see that the farrier with his drawing- 

 knife invariably pares out the sole at the seat of corn ; 

 it can be no injury whatever to the foot when properly 

 done, and is the best preventive of corns. Also take 

 proper care that the shoes are so put on that they 

 cannot by possibility press upon the sole. 



For prevention, keep the seat of corn well pared away, 

 and dress with tar, unless in the suppurating state, 

 when it requires poultices (page 149), and the ordinary 

 treatment for that state, and full rest. 



Over-reach or Tread proceeds from the shoe of one 

 foot coming in contact with the soft or sensible part 

 above the hoof of the other. As the parts likely to 

 be affected round the coronet are full of vessels, the 

 simplest remedial means are the safest — viz., water- 

 dressing (page 149) in the first instance, and afterwards 



