20 MAXCAL 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 

 from 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 of 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 certaiii io 



