30 Veterinary Medicine. 



the feathers are parted so as to examine the skin. On the feath- 

 ered parts of the bodj' the feathers stand erect and are in part 

 shed, leaving their round open follicles which have been mistaken 

 for the honeycomb formations seen in favus in man. No such 

 cup-shaped fungus growths are found, the cryptogam growing 

 evenly on the surface and in the epidermis only. If neglected 

 the malady extends, becoming generalized and causing fever, 

 thirst, somnolence, digestive disorder, diarrhoea, marasmus and 

 death. When it attacks the legs the lophophyton propagates be- 

 neath the scales, which it raises and loosens, and here, as else- 

 where, it exhales a strong mousy odor. 



Treatment is as in favus. The mercurial preparations may 

 be applied to the comb, head and neck, while the less poisonous 

 agents are to be preferred for parts that can be reached with the 

 beak. The same precautions must be taken to destroy the fungus 

 in the poultry houses and yards, but especially on the roosts, 

 feeding troughs and nests. 



TINEA DIFFUSA. 



Small, dry, yellowish-gray scabs like hempseed, on back, shoulders, 

 ribs, flank ; inveterate, itchy ; slight, refrangent spores blue in iodine, in- 

 fected other horses and men ; resisted general treatment, but yielded to 

 local. 



Under this designation Goyan and Megnin described a der- 

 momycosis of horses at St. Cyr, afEecting especially the upper part 

 of the neck, the back and the loins, and manifested by small, dry, 

 scabby, yellowish incrustations about as large as a grain of 

 hempseed, but thickly disseminated over the affected part of the 

 skin. It extended downward in different cases on the shoulders, 

 ribs, flanks and thighs. It will last for a year or more if ne- 

 glected, and in the scanty eruptions is like the bald, chronic, 

 tinea tonsurans of the scalp of man, as described by Bulkley. 

 The affection is associated with itching, especially troublesome at 

 night, and this leads to violent rubbing or biting and the escape 

 and incrustation of blood and lymph so as to hide the microphyte. 

 By turning back the hair so as to find a place which is not 

 abraded in this way, the primary scab may be secured along with 



