60 KENNEL DISEASES. 
prominent symptoms there is a striking resemblance. Such ulcerations are very 
rare indeed in dogs; and when occurring in them they are almost always due to 
foreign bodies lodged in the nose, or to injuries, as from a blow, in which bones 
or cartilages therein are broken, and there is necrosis or death of the former. 
A purulent, foul-smelling discharge, offensive breath, and more or less ob- 
struction to breathing through the nose, are the symptoms indicative of this 
trouble. There is also, as a rule, notable impairment of the general health. 
As the actual cause can rarely be determined except by thorough examina- 
tion of the nasal passages, the services of a professional will be required, and 
treatment should be left to him; but even an unskilled person would be justi- 
fied in exploring the nasal passages for the purpose of determining if there is an 
obstruction, provided always he used a piece of small rubber tubing, such as 
that attached to certain kinds of infants’ nursing-bottles. With it he could not 
do harm. He ought, moreover, be able to detect obstruction ; and where the 
same is a foreign body and not deeply embedded in swollen tissues, he might 
possibly push it back into the throat, from which it would be speedily expelled. 
In any case in which professional assistance cannot be obtained, it would 
be advisable to explore the nasal passages by this means, and follow the opera- 
tion with daily injections of the peroxide of hydrogen, as recommended when 
worms are lodged in the nose. 
OZANA. 
Ozzena, often termed stink-nose, is a chronic disease, which is generally classed 
as one of the varieties of nasal catarrh, but scarcely with propriety, for its source 
is not in the nasal passages, but in adjacent cavities, although it manifests itself 
by an extremely fetid, offensive discharge from the former. 
This complaint has its origin in a catarrhal inflammation in some one of the 
stated cavities. The secretion in the same soon becomes pus, which, being re- 
tained, undergoes degeneration. Escaping from the place of formation, it runs 
into the nasal passages, where it accumulates and forms foul-smelling masses, 
which are only expelled with difficulty, and but rarely until they have been retained 
four or five days. And as soon as they are removed, other masses speedily fill 
their places. 
This discharge and an equally offensive breath are the pronounced symptoms 
of the disease ; and with them there is generally quite persistent sneezing. The 
breathing through the nose may be obstructed, but not necessarily at all times ; 
for after the accumulated masses have'been discharged there is seldom any con- 
siderable impediment to breathing through the nose until others are formed. Nor 
is careful examination of the nasal passages, which some authors urge should be 
