CHAPTER XXXIX. 



DISEASES OF THE SKIN. 



CIASSIFIOATION — THLLAN AND BATEMAN's, BENNETT*S, iJKD BUCH- 

 ANAN'S CLASSIFICATIONS ERYTHEMATOUS INFLAMMATIONS CLIP- 



PINQ HORSES HERPES— URTICARIA. 



An essay was read a short time ago at a provmaal veterinary" 

 association by a veteiinary surgeon, who stated that Professor 

 Spooner, in his lectures, instructed his class to the effect that if 

 all the skin diseases of the horse "were put in a sack and shaken 

 np, they -would turn out to be mange. With aU due deference- 

 »;o the essayist, I must demur from his conclusions ; and from 

 -nuch observation, I am in a position to stale that true man^& 

 is a rare disease in this country. 



In the human being diseases of the skin are so numerous and 

 BO important as to demand a speciality of study ; but in the 

 lower animals they are found to be much simpler in their nature, 

 fewer in their varieties, and more amenabb to treatment At 

 the same time, many of them bear so close a resemblance to 

 those of man, that a classification based upon the researches of 

 the more recent dermatologists, may with advantage be adopted 

 by the veterinary surgeon. 



There are three classifications : — 1st. The artificial one of 

 "Willan, Bateman, and others ; 2d. The natural arrangement 

 of Alibert and others; and 3d. A pathologiceJ classification, 

 founded on the supposed morbid lesions ; but of these the 

 classification of Willan and Bateman is considered the best 

 for practical purposes. It is comprehended in the following 

 definitions of terms in common use in the description of skin 

 diseases : — 



