GLANDERS 



205 



a chronic nasal discharge, nasal 



A horse may be affected with a mild, chronic form of the 

 disease and remain in good flesh, be vigorous and apparently in 

 the best of health for years, showing no marked nasal discharge 

 or farcy sores, and yet be very actively infectious to other 

 horses. 



Chronic cases may show 

 ulcers, and hardened, ad- 

 herent maxillary glands 

 and unthrift. 



Farcy.— In the farcy 

 form of glanders the su- 

 perficial connective tissues 

 and lymph vessels and 

 glands are especially in- 

 volved. 



In the acute form, there 

 is high temperature and 

 local swellings. These 

 swellings often occur on 

 one or both hind legs. As 

 the swellings abate, the 

 characteristic nodules, or 

 farcy buds, appear. 



The head may swell 

 badly and farcy sores ap- 

 pear later at irregular in- 

 tervals and places. Farcy 

 buds tend to heal slowly 

 and leave scars as shown in Fig. 71. When farcy buds break, 

 there is discharged a clear, viscid pus that is very characteristic. 



The specific symptoms of farcy may be summed up as the bud, 

 the ulcer, the lymphatic cord, and the characteristic viscid, sticky 

 discharge. 



In the chronic form we have similar histories and symptoms, 

 but the latter are less obvious and develop less rapidly. 



Diagnosis. — A positive diagnosis on the clinical symptoms may 

 be frequently made. But there are a great many cases which 

 cannot be so diagnosed with certainty. Some show indefinite 

 symptoms and others show none. In such cases, we must rely 

 upon mallein tests of which we now have three. 



Mallein tests. — The temperature test is conducted as follows: 



Fig. 70. — Glanders (Farcy). (M. H. B.) 



An old ease. Note enlarged leg with 

 old farcy buds, healed. 



