After the Application of the _Lapis Infernalis_, or any other Cautery-Stone, it is necessary to lay over it a Plaister, a Bolster, and a Circular Bandage, which ought to be kept sufficiently close, to press the Stone, after a Pea or little Piece of Orrice-Root, hath been put into the Ulcer to keep it open. Then the Patient is to make use of this Bandage, with which he may dress it himself. Take a piece of very strong Cloth, large enough to roll up the Part without crossing above it: And let three or four Holes be made in one of its sides, as many small Ribbans or Pieces of Tape being sow'd to the other, which may be let into the Holes, as occasion serves, to close the Band. * * * * * {267} CHAP. XXXIV. _Of the Application of Leeches._ It is requisite that the Leeches be taken in clear running Waters, and that they be long and slender, having a little Head, the Back green, with yellow Streaks, and the Belly somewhat reddish. Before they are apply'd, it is also expedient to let 'em purge during some Days in fair Water, fast half a Day in a Box without Water. Afterward the Part being rubb'd or chaf'd with warm Water, Milk, or the Blood of some Fowl, the Opening of the Box is to be set to the Part, or the Leeches themselves laid upon a Cloth; for they will not fasten when taken up with the Fingers. The end of their Tail may be cut with a Pair of Sizzers, to see the Blood run, and to determine its quantity, as also to facilitate their sucking. When you wou'd take 'em away, put Ashes, Salt, or any other sharp thing upon their Head, and they will suddenly desist from their Work; but they are not to be pull'd off by force, lest they shou'd leave their Head or Sting in the Wound, which wou'd be of very dangerous consequence. When they are remov'd, let a little Blood run out, and wash the Part with salt Water. {268} _The Dressing_ Is made with a Bolster soakt in some Styptick Water, if the Blood will not otherwise stop; or in Brandy or _Aqua-Vitæ_ if there be an Inflammation; and it is to be supported with a Bandage proper for the Part. * * * * * CHAP. XXXV. _Of the Application of the _Seton_._ To perform this Operation, a Cotton or Silk Thread is to be taken, after it hath been dipt in Oil of Roses, and let into a kind of Pack-Needle; then the Patient sitting in a Chair, is to hold up his Head backward, whilst the Surgeon gripes the Skin transversely in the Nape of the Neck with his Fingers, or else takes it up with a Pair of _Forceps_, and passeth the Needle thro' the Holes of the _Forceps_, leaving the String in the Skin. As often as the Bolster that covers the Seton is taken off, that part of the String which lies in the Wound is to be drawn out, and cut off. * * * * * {269} CHAP. XXXVI. _Of _Scarifications_._