246 CONTAGIOUS DISEASES. 



Tliis tumour seldom suppurates ; occasionally, however, I 

 have seen it developed into an abscess, which, after having 

 discharged a little unhealthy pus, has healed slowly, the tumour, 

 however, continuing as large, or even larger than before the 

 suppuration. 



If the animal is allowed to live, these symptoms remit, and 

 some of the ulcers may cicatrise, but they finally increase in 

 intensity, and upon the application of any slight cause of dis- 

 order become rapidly developed into those of acute glanders. 

 If the horse is well taken care of, it may do moderate work for 

 a long time whilst affected with chronic glanders. In the course 

 of time, however, symptoms of farcy appear ; it then becomes a 

 loathsome object, and if not destroyed, acute glanders sets in 

 and carries it off in a very short time. ^ 



Chronic glanders is more frequently seen than the acute 

 form in the horse, but in the ass and mule the latter is more 

 frequently met with. 



In acute glanders the period of incubation is very short — from 

 three to seven days ; whilst in the chronic form the period is 

 very uncertain, extending from a few days to several months. 



ACUTE FAECY. 



This form of the disease occurs either as the result of direct 

 inoculation with the discharge of glanders or farcy; from in- 

 fection through the medium of the air; as a sequel to some 

 exhausting disease, particularly diabetes ; from old age and other 

 debilitating influences. 



Sym^jtoms. — The primary signs are those of fever, elevation of 

 the animal heat to 106° or even to 108° F., rigors, loss of appetite, 

 and swelling of the extremities. 



The swellings of acute farcy, commonly confined to the ex- 

 tremities, manifest themselves by engorgement of a whole limb, 

 resembling the swellings of acute " lymphangitis or oedema, but 

 presenting an uneven surface, increasing and decreasing suddenly, 

 and attended with pain and lameness. When the engorgement 

 of the areolar tissue diminishes, enlarged lymphatic glands and 

 vessels will then be detected, forming buds and cords. The 



^ For the differential symptoms of glanders and other diseases accompanied by a 

 nasal discharge, see Principles and Practice of Veterinary Surgery, page 493. 



