20 
MANUAL OF MODERN FARRIERY. 
Shortly after the discharge from the nostril takes place, 
the horse is then affected in the glands of the lower jaw, 
which swell to a considerable extent, and ultimately become 
attached to the bone. Another character by which this 
disease will be known, is, that at no time is the discharge 
ifom the nostril accompanied by cough. Some considerable 
time after the discharge has made its appearance, the gluey 
substance will be seen accompanying the mucus discharge. 
It is this pus mingling with the other gluey matter which, 
absorbed by the circulating vessels and carried to the gland, 
affects it. However, in common catarrh, the glands are 
sometimes swelled. But in the real glanders the swelling 
generally subsides considerably in a short time; and the 
glands are not in the centre of the channel, but adhere firmly 
to the jaw. This is a never-failing test of the disease ; and 
besides, it is quite certain that if the discharge flows from 
both nostrils, that it is not the glanders. 
At this stage of the disorder, the mucous membrane ot the 
nostril becomes dark purple or of a livid colour; sometimes 
of a tone intermediate between these two shades. In some 
instances there is inflammation of those parts, which varies 
from the common appearance, being of a purple cast, instead 
of the high red which usually accompanies inflammation. 
This is followed by the formation of small circular tubercles 
on the lining of the nostrils, and these in a short time ulce¬ 
rate and discharge pus. When this has taken place, there 
can no longer exist a doubt that the horse is glandered . 
Care must be taken not to mistake the lacrymal or tear-duct 
for an ulcer. This duct is a continuation of the common 
skin of the muzzle, which is situate a little way up the 
nostril; while the ulcerated tubercles are placed upon the 
mucous membrane above the duct, and well marked by a 
line of separation. 
After the formation of tubercles the animal is certain to 
