This section is from the book "The Farmers Ready Reference Or Hand Book Of Diseases Of Horses And Cattle", by S. C. Orr. . Also available from Amazon: The Farmer's Ready Reference;.
Farcy, or as it is commonly called, button farcy, is simply another form of glanders, which, instead of affecting the internal organs or the mucous membrane, characterizes itself by small tumors commonly called farcy buds. These buds generally make their appearance on the inside of one or both hind legs, but may appear on any part of the body. If a bud is cut open it discharges a sticky, amber-colored fluid which corresponds to the nasal discharge in glanders.
As it is a most difficult thing for even an expert to diagnose a case of glanders with any certainty in the first stages, it is utterly impossible to give any rule by which the inexperienced might be able to form a correct idea of the disease; hence, we advise calling a competent veterinarian to examine the case in person whenever there is a nasal discharge the nature of which is not known.