Chap. XLIX. Of the Mange. 1 8 5 



made of Brimftone, Orpiment, and unflakM Lime ; the 

 Ointment is no other than the yellow Arfenick, but obtains 

 the Name oi Orpiment from the Painters. Corrofive Subli- 

 mate is a Preparation of Mercury, which borrows its cau- 

 ftick and burning Quality from the Jqua fortis which en- 

 ters into its Compolition. Any of thefe us'd dry will yet be 

 of more fudden Efficacy ; unilack' Lime, or the capital Soap 

 Lees evaporated to a Drynefs, will have the fame EfFe<5t ; or 

 the Lunar Cauftick, fo much in the Acquaintance of Sur- 

 geons ; and, in fine, all things that are plentifully faturated 

 with Fire But in the Farcin they ought to be guarded 

 and made more moderate, as in the Manner above pre- 

 fcribed. Neither is the atftual Cautery or Fire to be apply'd 

 otherwife than as an Auxiliary, and to affift in other Inten- 

 tions, viz. to keep down a luxuriant and frefh Growth of 

 proud Flefti, after the Knife, or the more gentle Caufticks, 

 But the Reader may turn to the latter End of this Treatife, 

 where the Nature and Ufe of that Operation is (hev^^n^ 



CHAP. XLIX. 



Of the Mange, 



AS the Diflemper we have treated of in the preceeding 

 Chapter has its chief Seat in the Skin and flefhy Pannicle, 

 thatwhich comes under our prefentConfideration is yet more 

 fuperficial, being principally feated on the Surface of the Skin 

 only arid Scarfskin ; and therefore as the Mange is thus cir- 

 cumfta^nc'd, it is feldom attended with Pain and Inflamma- 

 tion, but only with an Itching, that thin membranous Tegu- 

 ment not being indued with any tender Sen fation, as has beea 

 iobfervM in the Beginning of the Anatomical Part; but yet if 

 a Horfe has been ill manag'd, or that the Diftemper has been 

 of a long ftanding, it is then apt to degenerate from what 

 jt was at firft, and taking deeper Root, it caufes Boils and 

 Sores, which often have a very ill Tendency. 



The Caufe is from an over-great Quantity 'The Caitfe. 

 of vifcid Serum bred in the Bodies of Horfes 

 by corrupt and foul Feeding, ns the eating of Grains, a too 

 frequent ufe of hot Maflies, Want of due Exercife, and the 

 Want of good Currying, efpecially to a Horfe that has been 

 ufed to it ; for by that Means the Pores become obftrudted, 

 and the Serofities of the Blood are thereby accumulated in 

 the fmall Veflels of the Skin, Sometimes it proceeds 

 from Want of Food and due Nourifliment, whereby the 

 Blood being depauperated, is render 'd unable to reach 

 U 4 th« 



