Actinomycosis
the name now given to a disease long known to occur in cattle, but confounded with tubercle or sarcoma. In 1877, Bollinger, of Munich, showed that little yellow grains are always present, consisting of a minute fungus, with its mycelium arranged in a radiate manner. To this fungus he gave the name actinomyces; and further observation has confirmed his view that it is the cause of the disease. Actinomycosis is most common in cattle; occurs also in pigs, and (rarely) in man.