MANUAL FOR STABLE SERGEANTS. 151 



is formed. The horse may now be shod. Pack the foot with oakum 

 and tar and cover with a leather sole, which is held in place by the 

 shoe. 



Should it be desirable to change the dressing on the shod foot, a 

 more convenient appliance to keep them in place is made in the 

 following manner: Cut a piece of zinc to cover about two- thirds of 

 the sole and frog, the outer edge of the piece fitting under the shoe; 

 cut another piece to cover the remaining third and wide enough to 

 lap over the first piece, the lap to run parallel with the cleft of the 

 frog; then cut a strip about one inch wide to act as a keeper; the 

 ends of this strip are passed under the shoe, the strip passing across 

 the foot from quarter to quarter. 



Other recommendable remedies in the treatment of canker are as 

 follows: 



A. 



Formalin ounces- . J 



Alcohol . . .' do 9J 



Apply once daily until parts become hard. 



B. 



Bichloride of mercury drams. . 2 



50 per cent alcohol ounces. . 5 



Apply gently with a soft cotton swab. When dry apply a pressure 

 dressing. 



454. Corns. A corn is a bruise to the sensitive sole between 

 the wall and the bar. Corns occur usually in the fore feet, where 

 they are found more often in the inner than in the outer heel. They 

 are seldom found in the hind feet. 



Corns may be dry or suppurating. 



A dry corn is one in which the injury is but slight, and where 

 nothing but the staining of the horn with blood remains to indicate 

 that an injury has existed. 



A suppurating corn is one in which pus has formed. 



Causes. Fast work on hard roads. Improper shoeing, such as 

 lowering one quarter more than the other; leaving the toe too long; 

 lowering the wall too much and allowing the sole to rest on the shoe; 

 shoeing with shoes that are too short; fitting the shoes too close at the 

 heels, and allowing the shoes to remain on so long that the wall 



