THE MODERN HORSE DOCTOR. 309 



these crusts are sometimes converted into minute ulcers, which 

 deepen, until they destroy the roots of the hair. They generally 

 produce intolerable itching, which obliges the animal constantly 

 to rub himself, and thus destroy the hair. The eruption some- 

 times occupies a single spot, which soon extends so as to cover a 

 large space ; sometimes it appears on the tail, at others on the 

 neck and on the flanks, whence it gradually extends. This form 

 of eruption is called humid exanthema. There is another form, 

 known as dry exanthema, which appears in the form of small 

 pimples : they soon scale off, and the place they occupied is cov- 

 ered with a farinaceous powder. The animal seems to suffer 

 the most excruciating torment, and is constantly rubbing himself. 

 The best local remedy for either case is, — 



Pulverized charcoal, 1 ounce, 



Olive oil, 1 pint, 



Pyroligneous acid, 5 ounces, 



Common salt, 1 ounce. 



Mix, and lubricate the parts daily with a sponge. 



The internal treatment should always commence with small 

 doses of sulphur, sassafras, and bayberry bark, given occasionally 

 in the food. For further information, the reader is referred to 

 article Poultry Lousiness. 



KING WORM. 



Ringworm presents itself in the horse in the form of circular, 

 and sometimes irregular, patches denuded of hair, having on 

 their surfaces a morbid secretion, and incrustations of the same. 

 It generally locates on the sides of the neck, and occasionally on 

 other parts. We have never seen any thing on the subject in 

 American books, and presume there are but few who ever suspect 

 their horses to be subject to ringworm. In fact, the author 

 would have been in the dark regarding it, had he not seen an 

 article on the subject, written by Mr. Percivall, who was the 

 first to call the attention of English veterinarians to it. Since 

 reading Mr. Percivall's account of it, we have come into pos- 

 session of Mr. Haycock's Veterinary Homozopathy, and there 

 find a case, which, for the benefit of the reader, we here in- 

 troduce. 



