TKEATMENT OF COKN. 



393 



parts. The depression iu the horn is closed with a pledget of 

 tow saturated with carbolic oil or tincture of myrrh, and 

 retained in position, if necessary, by a leather sole. 



In old corns it is not sufficient to temporarily protect the 

 diseased spot, but the same precautions must be observed 

 continually or for a long time. A three-quarter bar shoe is 

 very useful, a portion being cut out at the diseased spot, so that 

 it experiences no pressure whatever. The illustration (fig. 368) 



Fig. 368. — Three-quarter bar shoe, a, seat 

 of the corn. 



Fig. 369. ^Ordinary three-quarter shoe. 



sufficiently shows the construction of this shoe. In light 

 horses with good frogs the ordinary three-quarter shoe, that is, 

 a flat shoe minus the inner quarter, suits very well (fig. 369). 



In corns associated with side bone, flat shoes with a thick 

 leather sole are applied, and the hoof is kept moist. 



If, in cases of old-standing corn, ojie or other of the bulbs 

 becomes backwardly displaced, it is probable that the os pedis 

 is diseased, as shown in fig. 368. The shoe, whether a bar or 

 ordinary shoe, should then be provided with longer heels in 

 order to remove weight from the diseased side (compare 

 page 322). 



Other complications, like sinus, etc., consequent on the 

 further development or neglect of corns, require the attention 

 of a veterinary surgeon. 



