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rather than nervous subjects, and at the same time in several animals 

 that have herded together. The disease is common to man, and among 

 the domestic animals to horse, ox, goat, dog, cat, and in rare instances 

 to sheep and swine. Hence it is common to find animals of different 

 species and their attendants suffering at once, the diseases having been 

 propagated from one to the other. 



In the horse the symptoms are the formation of a circular scruffy patch 

 where the fungus has established itself, the hairs of the affected spot 

 being erect, bristly, twisted, broken, or split up and dropping off. Later 

 the spot first affected has become entirely bald, and a circular row of 

 hairs around this are erect, bristly, broken, and split. These in turn 

 are shed and a new row outside passes through the same process, so that 

 the extension is made in a more or less circular outline. The central 

 bald spot, covered with a grayish scruff and surrounded by a circle of 

 broken and split hairs, is characteristic. If the Sf-ruff and diseased 

 hairs are treated with caustic potash solution and put under the micro- 

 scope the natural cells of the cuticle and hair will be seen to have 

 become transparent, while the groups of spherical cells and branching 

 filaments of the fungus stand out prominently in the substance of both, 

 dark and unchanged. The eruption usually appears on the back, loins, 

 croup, chest, and head. It tends to spontaneous recovery in a month 

 or two, leaving for a time a dappled coat from the spots of short, light- 

 colored hair of the new growth. 



The most effective way of reaching the parasite in the hair follicles is 

 to extract the hairs individually, but in the horse the mere shaving of the 

 affected part is usually enough. It may then be painted with tincture 

 of iodine twice a day for two weeks. Germs about the stable may be 

 covered up or destroyed by a whitewash of freshly burned quicklime, 

 the harness, brushes, etc., may be washed with caustic soda, and then 

 smeared with a solution of corrosive sublimate one half drachm and 

 water 1 pint. The clothing may be boiled and dried. 



Parasite: Trichophyion sporuloides. INIalapy: riica Polonica. — 

 Plica rolonica, which mats together the mane and tail of the horse as 

 well as the hair of men, is associated with numerous spores of a tri- 

 chophyton, and is rationally treated by cutting off the hair and apply- 

 ing tincture of iodine or a solution of corrosive sublimate (4 parts to 

 1,000 water). 



Parasite: Aclior'wn Sclwnlcini. Malady: Favus, Honeycomb ring- 

 worm. — Megnin and Goyan, who describe this in the horse, say that it 

 loses its characteristic honeycomb or cup-shaped appearance, and forms 

 only a series of closely aggregated, dry, yellowish crusts the size of 

 hemp seed on the trunk, shoulders, flanks, or thighs. They are ac- 

 companied by severe itching, especially at night. The cryptogam, 

 formed of spherical cells with a few filaments only, grows in the hair 

 follicles and on the cuticle, and thus a crust often forms around the 

 root of a hair. Like the other cryptogams, their color, as seen under the 



