RINGWORM 133 



to another, and is communicable to man. The disease 

 is attended with more or less itching. 



Tinea favosa is caused by another fungus which 

 affects the hair follicle and the cuticle surrounding it. 

 Small crusts form which increase in size and thickness 

 and then become elevated at their margin, forming a 

 cup-shaped scab, which gives the disease its distinctive 

 character. The crusts are of a pale sulphur-yellow 

 color at first and grow darker with age. The disease 

 has a peculiar odor, resembling that of mice or musty 

 straw. It may be communicated to cattle by man, 

 mice, cats, etc., all of which are subject to the disease. 



The treatment of either form of the disease is to 

 remove all crusts by washing with soap and water, then 

 apply acetic acid, sulphur ointment, tincture of iodine, 

 or nitrate of mercury ointment, once a day. Disinfect 

 the stables and whitewash them to destroy the spores 

 scattered by the crusts. 



LUMP-JAW (ACTINOMYCOSIS) 1 



This disease is caused by a vegetable organism, sup- 

 posed to be a fungus, known as actinomyces. The 

 fungus is composed of minute, radiating, club-shaped 

 particles, hence it is known as "ray fungus." The parts 

 of the animal commonly affected are the bones of the 

 upper and lower jaws, and the soft tissue between the 

 two branches of the lower jaw, although it sometimes 

 'affects the lungs and other internal organs. The disease 

 is characterized by peculiar enlargements around the 

 head, or other parts affected. These enlargements 

 develop in time from the size of a hen's egg up to that 

 of a man's head. 



The natural habitat of the fungus causing the disease 

 is supposed to be on forage grown on low, wet ground, 

 and especially on the awns of barley. As the animal 

 masticates such forage, abrasions of the soft tissues of the 



» The information here presented is taken mainly from Reynolds' 

 Veterinary Studies. 



