194 The Management and Diseases of the Dog. 
With regard to the further treatment of canker, I quote the following 
from the ‘ Veterinary Journal,” Sept., 1875, p. 216: Treatment of Ulceration 
in the Ears of a Dog, by Coculet :— ; 
“The disease vulgarly known as ‘canker’ in the dog is frequently most 
troublesome and unsatisfactory to treat, for several reasons. In the ‘ Recueil © 
de Méd. Véterinaire,’ Coculet recommends, as a very successful method of 
dealing with these auricular chancres, the application of some blistering 
ointment or liquid over the external surface of the ear. The preparation he 
employed was tincture of cantharides forty-five grammes, tincture of oak galls 
ten grammes. This was applied once every two days, and by its influence 
the intolerable itching which accompanies the disease was allayed, and a 
smart but inconvenient pain substituted. The animal no longer. shakes its 
head, nor scratches the ears with its paws, and the chancres soon disappear.” 
SEROUS ABSCESS. 
It not unfrequently happens from the violence applied in 
canker to the inflamed organ by the dog himself, or inde- 
pendent of canker existing, from blows or bruises, that an 
infusion of serum takes place between the integument on 
the inside of the ear and the cartilage underneath, giving 
the organ a peculiar, dropsical, baggy appearance. In such 
a case it is best to open the sac at its most dependent part 
with a lance, making a free incision, and evacuating the 
contents. A piece of lint should be placed over the wound, 
and the ear bound flat to the head for a few hours. In 
a short time the wound will heal, and the ear assume 
its natural condition. There is no necessity to induce 
suppuration ; if nature establishes it, well and good, and 
it must then be treated as a suppurating sore. Not 
unfrequently, however, secondary effusion in these cases 
takes place, and if neglected lymph is thrown out, and 
becomes organised, causing a thick, lumpy, unsightly 
condition of the ear. In such event it should be laid fully 
open, all adhesions separated and deposit removed, and the 
space between the integument and cartilage packed with 
cotton wool, steeped with tincture of iodine, and renewed 
every second day until all thickening and lumpiness has 
vanished, and the ear assumed its normal shape and 
proportions. 
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