AND MALFORMATIONS OF THE FEET. 65 



of which press unduly on the seat of corn ; and in 

 shifting of shoes from bad fitting or from being 

 worn beyond the proper period. 



The indirect, though equally real and more 

 common causes of this disease are to be found — 

 1st, in the ordinary practice of rasping the crust, 

 by which it is rendered weak and insufficient to 

 bear the superincumbent weight ; 2ndly, in the 

 removal of the bars, which, jointly with the crust, 

 ought to sustain the shoe ; 3rdly, in the practice of 

 paring out the seat of corn, by which the sensitive 

 sole becomes more exposed to injuries from bruises ; 

 4thly, in lateral pressure on the seat of corn from 

 the crust and bars, when the insensitive sole in that 

 angle is pared out. 



The treatment of a corn in its earlier stages is 

 extremely simple, and consists only in removing the 

 cause, namely, undue pressure. 



This may be effected by paring out the seat of 

 corn carefully and without injury to the crust or 

 bars, and by applying a three-quarter shoe, which 

 will relieve the part affected from pressure. If, 

 however, the corn is very tender, a three-quarter 

 bar shoe, which will give more complete relief, had 

 better be used. 



The common practice of applying a complete 

 bar shoe with the view of protecting the seat of 

 disease from bruises, stones, &c., is objectionable, 

 because dirt and gravel are apt to lodge under the 



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