216 
HIPPO- PATHOLOGY. 
and becoming altogether as abundant as it was at first sparing. 
The glands under the throat will swell considerably, and evince 
tenderness on being felt or compressed ; those below the roots of 
the ears will likewise become tumid, giving rise to what grooms 
call “ the coming down of the kernels.” Cough is commonly pre- 
sent, and in some cases sore throat. In a few cases so extensive 
and violent is the inflammation in the membranes of the nose and 
throat, and so abundant the discharges from them, that embarrass- 
ment is occasioned in respiration, which may increase to that de- 
gree to produce violent and convulsive fits of coughing, and even 
to put the animal in danger of suffocation unless relieved by the 
operation of bronchotomy. This, however, is what rarely hap- 
pens, save in the epidemic variety of catarrh. 
The DURATION of an attack of catarrh is ordinarily from one week 
to three. Should it not appear to be on the decline about the 
third week, we may infer that the disorder is becoming chronic, 
in which form its duration cannot be said to have any definable 
limits. 
In CHRONIC catarrh, the nasal defluxion it is which constitutes 
the prominent and troublesome symptom : indeed, it is often the only 
one remaining. Sometimes the matter is yellow, from the admix- 
ture of pus with mucus ; at others, it is altogether as remarkable 
for whiteness, and possesses a clotted or grumous character : in a 
few cases it consists of an opaque, thin, dirty-looking mucus. In 
general these chronic cases “ run themselves dry,” as the phrase 
goes; though every now and then we meet with one degenerating 
into nasal gleet , an affection I shall consider hereafter. 
The TERMINATION of catarrh, taking its ordinary course, is in 
the return, more or less speedy, of health. At such times, how- 
ever, as it manifests more than usual severity, and particularly 
when much inflammation and stoppage in the cavities of the nose 
and throat are indicated, there is great reason to apprehend its 
running into bronchitis, in which extended and modified form it 
becomes pregnant with all the dangers of an inflammation in the 
lungs. Many a horse has changed hands having at the time a 
simple “ cold,” which in his new owner’s possession has run into 
an attack of bronchitis ; from which, should he escape with his 
life, there is still great risk of his becoming a roarer. Catarrh 
may prove but the precursor of strangles. But again, cases do 
occur, though happily for us but rarely, wherein the disorder, 
after having run its course, and all signs of inflammatory action 
have subsided, leaves a discharge from one or both nostrils, to 
which we have given the name of nasal gleet ; and the appella- 
tion is applicable enough, so long as the defluxion presents no- 
thing bevond the catarrhal character : from the moment, however, 
