314 INFECTIOUS DISEASES 



hind limbs and are known as " farcy buds." Lymphatic vessels 

 near these buds become swollen and hard. The animal loses 

 flesh rapidly, does not withstand hard work, and the limbs 

 usually swell. 



It is sometimes difficult to diagnose the disease. The ulcers 

 on the nasal mucous membranes and elsewhere are very charac- 

 teristic, and when present enable the examiner to form a diag- 

 nosis. In cases of doubt, a bacteriological examination of the 

 nasal discharge may be made, or we may resort to one or several 

 of the various diagnostic tests. The Mallein test is quite 

 commonly used. The sterilized products of a culture of the 



B. mallei are injected beneath the skin 

 of the suspected animal. This causes 

 a rise in body temperature and a hot, 

 characteristic swelling at the point of 

 I injection in glandered animals- 



Treatment is not recommended at 

 the present time. ISTearly all of the 

 States have laws which aim to stamp 

 out the disease wherever found by 

 Fia. na.— streptococcus pyogenes killing all afi"ected animals, and thor- 

 ^""'^ oiigbly disinfecting the stables, har- 



ness and everything which has been near the animal. Dis- 

 eased animals should be carefully isolated until slaughtered, 

 and all animals exposed to them should be subsequently tested 

 for glanders. 



Contagious Pleuropneumonia (Stable Pneumonia). — This 

 is an infectious disease of solipeds that usually results in a fatal 

 inflammation of the lungs and pleural membrane. 



Many writers have described this disease as associated with 

 influenza, but it is frequently seen as a separate disease, usually 

 involving only the lungs and pleurae. It is prevalent in several 

 parts of the United States, more particularly the horse centers 

 or large markets, where it appears in the form of epidemics. 



