20S Originalabhandliingen. 



solutions of quinia, etc. In short all antiferraentative substances ; 

 or all those bodies that prevent yeast from exciting- fermentation 

 in sacharine and farinaceous materials, — or that tend to prevent 

 animal tissues from undergoing fermentative changes, — become 

 useful agents in diseases caused by parasitic cryptogames. Under 

 ordinary circumstances, this plant, probably will not grow upon the 

 healthy body. It only becomes capable of developing in such 

 situations, after becoming animalized — so to speak — by de- 

 veloping in the milksmeased and saturated epithelial tissues of 

 the cat. 



One of the most ready remedies for perfectly eradicating this 

 eruption is the tincture ferri chloridi. This should be painted 

 over the eruption daily till cured. Frequently a single application 

 will do the work. The mineral acids, when used should be 

 sufficently diluted, so as not to cautizize, or to produce too much 

 irritation. 



II. Trichosis Caninis. 



This is a skin disease, affecting dogs. The eruption begins 

 by a small pustul or elevation, covered with epithelial scales; 

 other little pustules appear around this, — and beyond these, 

 others soon arise. In this way the disease gradually extends in 

 all directions from the starting point, — from follicle to follicle, 

 — producing circular and oval patches, elevated above the sur- 

 rounding healthy surface about one line and covered with dry 

 epithelial scales, rolled and wisted up. The patches extend, 

 and have a shape like those of Trichosis furfuraceae, on the 

 human subject. Like the last named disease this is crypto- 

 gamic. It is produced by a parasitic mucedinous growth, which 

 develops among the epithelial cells of the epidermis, passing 

 down among the cells of the hair, sweat and fat follicles of the 

 skin, depriving them of nourishment. This causes them to sicken, 

 shrivel and dry up, die, become detached and fall off in dry 

 scales. The cells from which the hair is supplied with food and 

 cell elements, becoming diseased, the hair is imperfectly nouri- 

 shed, shrivels up, dies, and falls from the follicles. This disease 

 extends to all parts of the surface of the dog. Young dogs, 

 while nursing-, are more susceptable to it than old ones; yet 



