CHAPTER XIII. 



THE SKIN AND ITS APPENDAGES. 



Diseases of the skin arising from general causes, continued. Vesicular 

 eruptions. Humid tetter, or eczema simplex. Eczema rubrum. Eczema 

 impetiginodes. Eczema chronicum, or psoriasis. Rat-tails. Mallenders 

 and sallenders. Pustular eruptions. White face and foot disease, or 

 impetigo fascialis. Neck mange, or impetigo colli. Impetigo larvalis, 

 or 'breaking out' on the mouths of young animals. Cracked heels. 

 Grease. Impetigo erysipelatodes. Ecthyma in man and animals. Her- 

 petic, or bullous eruptions. Herpes. Herpes phlyctenodes. Herpes 

 labialis. Herpes caleus. Herpes exedens. Hydrargyria. Herpes deca- 

 lenno. Herpes scabiosus. Pemphigus. Furuncular eruptions. Boil. 

 Sty. Carbuncle. Scorbutic eruption. Purpura. Purpura haemor- 

 rhagica. Diseases arising from special external causes. Scabies in all 

 animals. Its parasitic nature. Gerlach's researches. Description of 

 the parasites. Development of the disease. The treatment of scabies. 

 Its prevention. 



ECZEMATOUS OR VESICULAR ERUPTIONS. 



THESE eruptions are characterised by the development of 

 numerous small vesicles clustered together on an inflamed 

 skin. Of late years, in this country, the term ' eczema' has 

 been applied to the prevailing plague commonly known as 

 the foot-and-mouth disease, or vesicular murrain. This has 

 been a great error, and has cheated endless confusion, as the 

 epizootic aphtha must be described with the eruptive fevers 

 arising from the introduction of animal poisons into the 

 system. 



VOL. ii. 3 C 



