172 THE FARMER'S VETERINARIAN 



a suspected horse's nose, or from a farcy sore. If 

 they should develop glanders it would be proof 

 positive that the suspected horse had this disease; 

 if they do not develop glanders it is not always pos- 

 itive proof that the suspected horse is free from 

 the disease. Sometimes more than one test is 

 necessary, or another method of diagnosis may have 

 to be resorted to. This is the mallein test. 



Mallein is a product made from cultures of the 

 glanders bacillus analagous to tuberculin as made 

 from cultures of the tubercle bacillus, and is used 

 for testing horses for glanders much as tuberculin 

 is used for testing cattle for tuberculosis. A horse 

 infected with glanders will react to a mallein test 

 in much the same way as a cow infected with tuber- 

 culosis will react to the tuberculin test. It is not 

 customary in some states to kill a horse that reacts 

 to mallein unless it shows some clinical evidence of 

 disease. All horses that show clinical evidence of 

 glanders or farcy in some states are killed by the 

 state authority, and the law requires persons know- 

 ing or suspecting cases of this kind to report in 

 writing to the chief of the cattle bureau of the 

 state board of agriculture or to the inspector of 

 animals in the city or town where the disease is 

 believed to exist, except in some cities where the 

 city board of health has full charge of glanders and 

 farcy. Anyone selling, removing, transporting, or 

 concealing a horse knowing or having reasonable 

 cause to believe it has glanders or farcy is in most 

 states liable to a heavy penalty. 



In stables where glanders exists, in some cases, 

 all the horses are tested and divided; the reactors 

 are separated from the non-reactors, and those that 

 react are tested once a month until they cease to 

 react, or show physical indications of glanders and 



