28 THE DOGS OF THE BRITISH ISLANDS. 



CANKER of the ear is an eruption attacking the ear passage or external 

 ear, as the case may be, rather than a disease of the ear itself. According 

 to ita seat, as above mentioned, it is termed external or internal, and then 

 requires very different treatment. Internal canker may be suspected when the 

 dog is seen to shake his head constantly without having any eruption on the 

 external ear to account for this habit. On looking into the ear passage, it will 

 generally be found to be full of yellow matter, bnt sometimes the membrane lining 

 is thickened, red, and dry. In either case it is inflamed, and requires local as 

 well as general treatment. A solution of nitrate of silver should be dropped into 

 the passage every other day, alternating its use with the green iodide of mercury, 

 which should be blown in without admixture with lard. The dog should be 

 physicked with a mild aperient, his diet should be reduced in quantity and quality, 

 and some boiled green vegetables should be added to it every other day. These 

 remedies generally effect a cure in a fortnight, unless the disease has extended 

 beyond the drum of the ear into the delicate structures of the interior, in which 

 case it is often incurable. 



EXTERNAL CANKER attacks the tips of the ears, producing a scabby sore, on 

 one or both, which is greatly aggravated by the dog continually shaking his head. 

 Hence it often requires a canvas cap to be tied on, so as to confine the ears, 

 without which, in bad cases, no remedy is effectual. The general treatment is the 

 same as for internal cankers, but the sores require touching with bluestone after 

 rubbing off the scales, and afterwards applying the ointment of green iodide of 

 mercury. 



In very bad cases of either kind, when the system is in a very gross state, 

 6 or 8 drops of liquor arsenicalis should be added to the food twice a day, 

 proportioning the dose to small dogs accordingly. It should be continued for weeks 

 or even months, until it produces a redness of the white of the eye. 



INFLAMMATION OF THE MOUTH. 



The MOUTH is liable to inflammation from decayed teeth, or from the 

 collection of tartar about them. The only remedy is the removal of these causes of 

 irritation. 



WARTS sometimes infest the mouth to a very troublesome extent. They must 

 be removed with scissors, and the bases should then be touched with a small red- 

 hot iron; or with lunar caustic, the former being simpler, and giving less pain, if 

 properly applied. 



INFLAMMATION OF THE NOSE (OZENA). 



The NOSE is sometimes attacked by inflammation of its lining membrane, 

 producing a stinking discharge, which the dog is constantly dropping about. A 

 solution of chloride of zinc (2 grains to the ounce of water) may be thrown up with 

 a syringe daily. 



