46 . The Management and Diseases of the Dog. 
It is almost needless to add that a dog so affected should 
never be used for breeding purposes. 
POLYPUS. 
Polypus within the nose is occasionally met with in 
canine practice. At times the tumour is visible externally, 
protruding from the nostril; whilst at others, and when 
small, it may be situated high up and out of sight. 
Symptoms.—The animal frequently sneezes, and from the 
obstruction to the free passage of air the respiration is 
stuffy and difficult, and, if the obstruction has existed some 
time, is accompanied with nasal discharge. Examination 
reveals the presence of polypus. 
Treatment.—This consists in removal by ligature or for- 
ceps, and the nostril may be syringed for a few days 
afterwards with a weak solution of alum. 
OZANA, 
Though of common occurrence in the horse, is rarely seen 
in the dog. The disease consists of a copious and focetid 
discharge from one or both nostrils. 
Causes —Prolonged catarrh, irritation, from the presence 
of foreign substances in the nasal chambers or frontal 
sinuses, ulceration of the Schneiderian membrane, disease 
of the turbinated bones, unsound teeth. 
Symptoms.— Discharge, as already described, which may 
be continuous or periodical, obstructed breathing, having a 
rattling sound from the ingress and egress of air through 
the said discharge; frequent sneezing and occasional 
cough. 
Treatment.—The nostrils should be daily syringed with 
warm water, and where there is ulceration or diseased bone, 
either of the following lotions may be injected : 
