OUTSIDE OF THE EAR. 119 



ear; so smooth-coated dog's (as pointers and hounds) are 

 the only ones, in general, affected with this outer canker. 

 Pointers and hounds who have been rounded, by having: the 

 flap shortened, are less liable to it than those who have their 

 ears of the natural length. From this circumstance it is 

 common to round them after the disease has appeared ; but 

 it frequently fails to cure, unless the part taken off extends 

 considerably beyond the surface of the ulcerated slit. It is 

 common also to burn out the ulcer either with the actual 

 cautery, or with some caustic substance ; but this also proves 

 an uncertain remedy. 



In full habits, and where over-feeding and confinement may 

 be supposed to have had any share in the production of the 

 disease, the same rules must be attended to, w^ith regard to 

 the constitution generally, as are detailed for the internal 

 canker. But in other cases an external application is usually 

 found sufficient. An unguent, made with equal parts of oint- 

 ment of nitrated quicksilver and calamine cerate, may be ap- 

 plied once a day, carefully securing the ear from the injury 

 occasioned by the shaking of the head, by a sort of head 

 dress, during its use. Or the following may be tried :— 



Oxyrauriate of quicksilver (corrosive suhli- \ q grains 



mate) very finely powdered -' 



Cerate of calamine (TMrner'* cerate) 1 dram 



Sublimated or milk of sulphur 1 scruple. 



In some cases, the oxymuriate of quicksilver has proved 

 more efficacious in a wash, six grains being dissolved in four 

 ounces of water. Strong astringent washes are sometimes 

 useful, as alum, dissolved in a decoction of oak bark. When 

 the disease proves very obstinate, excision must be resorted 

 to, taking care that the whole, not only of the immediate 

 cracked part, but also of its tumefied edges, are included in 

 the operation. 



-*^*vr.#sr" 



