ECZEMA SIMPLEX. 131 



off, and the red skin is exposed, being entirely denuded of 

 cuticle, and usually moist with the discharge. The disease 

 may break out in different parts of the body, and it is found 

 that at one time the surface is raw in one place, and at 

 another the eruption is more marked at a distance from the 

 first part attacked. The irritation is intolerable. 



Mr Percivall describes two characteristic cases, one under 

 the head SurfeiC, and the other under Saddle-scald. The 

 first case illustrates the ordinary variety of eczema simplex. 

 His report is as follows-. 



" Oct. 5th, 1850. A four-year-old horse (A 25) was 

 .shown me this morning, with one circular patch, nearly 

 bare, upon his rump, close to his dock ; and several others 

 (three or four) on the off quarter, lower down. Little 

 vesicles, containing fluid, first came. These run into one 

 another, and break, the hair matting over them, and coming 

 off along with desquamations of the cuticle, which lies in 

 cakes or scabs around the places where the vesicles appear. 

 I viewed the places through a magnifying glass, and dis- 

 tinctly saw heaps of these scabs, which, when they separate, 

 bring the hair off with them, and leave the places bare until 

 new hair springs up and covers them. This horse has got 

 the tushes, and is now cutting his five-year-old teeth, without 

 any reddening of gum, or the slightest irritation." 



In the subjoined case the peculiarity is one often seen in 

 man and in the dog, in which the small confluent vesicles 

 are so closely aggregated as to give rise to one continuous 

 vesicle of great breadth, as described by Mr Erasmus Wilson 

 in his treatise on skin diseases. Mr Percivall furnishes his 

 readers with the following interesting particulars : 



" D 10, a grey mare, was shown to me 28th Oct. 1840, for 

 'eruptions' upon the body and limbs. The lumps are 

 scattered, being over the skin some distance apart, and but 



