CANKER IN THE EAR. 
647 
EXTERNAL ULCER OF THE EAR. 
This disease has by some been mistaken for canker, but 
it is very dissimilar. This complaint is known by a foul 
ulcer, which is situated on the lower edge of the flap, or one 
on both ears, in the form of a slit. The pain of this sore 
induces the dog almost continually to shake his head, which 
irritates the sore, and increases the discharge of matter. 
The most frequent remedy is burning out the sore, by 
means of a cauterizer, or with some caustic substances. But 
the following is more effectual :— 
Nitrated mercury 
Turner’s cerate 
Lard 
Bees’ wax . 
It must be well mixed together, and applied twice a day. 
The part must be covered with a cloth, well secured, otherwise 
the dog will remove all the ointment by scratching. 
The following has also been found an effectual remedy:— 
Corrosive sublimate . 4 grains, 
Milk of sulphur . . 1 scruple, 
Turner’s cerate . . 1 drachm. 
The following wash may be applied when the case is not 
severe, and will generally prove effectual:— 
Corrosive sublimate . 6 grains, 
Rose-water . . . 1^ ounce, 
2 drachms, 
2 drachms, 
2 ounces, 
£ ounce. 
CANKER IN THE EAR. 
This consists of an eating sore, which spreads widely if 
not stopped in time. The most simple remedy is the fol¬ 
lowing :•— 
Boil two ounces of shag-tobacco in a quart of water, until 
it is evaporated to a pint. Dip the dog’s ear into it, when as 
