552 DISEASES OF THE HOHSE. 



swollen leg in glanders almost invariably swells for the entire 

 length in a single night or within a. very short period. When greasy 

 heels are complicated by lymphangitis we have a condition very 

 much resembling that of farcy. The swelled leg in farcy is fre- 

 quently followed by an outbreak of farcy buttons and ulcers over its 

 surface. In the entire horse the testicles are frequently swollen and 

 hot and sensitive to the touch, but they have no tendency to suppura- 

 tion. The acute inflammation is rapidly followed by the specific in- 

 duration, which corresponds to the local lesions in other parts of the 

 body. 



Chronic farcy in the ass and mule is an excessively rare condition, 

 but sometimes occurs. 



CHRONIC GLANDERS. 



Symptoms. — In chronic glanders we find the same train of inflam- 

 matory phenomena, varying in appearance from those of chronic 

 farcy only by the difference of the tissues in which they are situ- 

 ated. In chronic glanders there is first the nbdule, from the size of 

 a- shot to that of a small pea, which forms in the mucous membranes 

 of the respiratory tract. This may be just inside the wings of the 

 nostrils or on the septum which divides the one nasal cavity from 

 the other, and may be easily detected, or it may be higher in the 

 nasal cavities on the turbinated bones, or it may form in the larnyx 

 itself or on the surface of the trachea or deep in the lungs. 



The nodules, which are first red and hard and consist of new con- 

 nective tissue, soon soften and become yellow ; the yellow spots break 

 and we have a small ulcer the size of the preceding nodule, which has 

 a gray, dirty bottom and ragged edges and is known as a chancre. 

 This ulcer pours from its surface a viscous, oily discharge similar 

 to that which we have seen in the farcy ulcer. The irritation of the 

 discharge may ulcerate the lining mucous membrane of the nose, 

 causing serpentine gutters with bottoms resembling those of the 

 chancres themselves. If the nodules have formed in large numbers, 

 we may have them causing an acute inflammation of the Schneiderian 

 membrane, with a catarrhal discharge which may mark the specific 

 discharge, or that which comes from the ulcers and resembles the 

 discharge of strangles or simple inflammatory diseases. 



The eruption of the ulcers and discharge soon cause an irritation 

 of the neighboring lymphatics ; and in the intermaxillary space, deep 

 inside of the jaws, we find an enlargement of the glands, which for 

 the first few days may seem soft and edematous, but which rs^pidly 

 becomes confined to the glands, these being from the size of an 

 almond to that of a small bunch of berries, exceedingly hard and 

 nodulated. This enlargement of the glands is found high on the 

 inside of the jaws, firmly adherent to the base of the tongue. It is 

 not to be confounded with the puffy, edematous swelling, which is 



