DISEASES OF THE SKIN. 



169 



The febrile symptoms, along with the heat, pain, and lameness, dimin- 

 ish; but the swelling still continues, and the skin is constantly moist 

 and greasy from the discharge, which is thick, foetid, and mats the hairs 

 together. Masses of fungoid granulations now appear, springing from 

 the unhealthy sores, consisting of hypertrophied papillse, covered over by 

 abnormal horny scales of epithelium, loosely attached to their surfaces. 



I 



Fig. 81. 

 Sarcoptes Hippopodus. 



easily rubbed off, and exposing a highly-vascular sensitive surface be- 

 neath, which bleeds at the slightest touch. These excrescences are com- 

 monly called "grapes," and they belong to a class of skin diseases de- 

 scribed by dermatologists as "acne," or chronic inflammation of the 

 sebiparous glands, characterized by the eruption of hard, conical, and 

 isolated elevations, which sometimes suppurate on their summits, or 

 pour forth an inordinate quantity of secretion ; whilst in other cases 



