Another manner of searching may be practis'd thus: Let the Yard be rais'd upward, inclining a little to the side of the Belly; let the Rings of the Probe be turn'd upon the Belly, and the end on the side of the _Anus_; and then let this Instrument be introduc'd, shaking it a little on both sides, to discover the Stone. In order to perform the Operation of Lithotomy, the Patient must be laid along upon a Table of a convenient height, so as that the Surgeon may go about his Work standing; the Patient's Back must also lean upon the Back of a Chair laid down, and trimm'd with Linnen-Cloth, lest it shou'd hurt his Body; his Legs must be kept asunder, and the Soles of his Feet on the sides of the Table, whilst a Man gets up behind him to hold his Shoulders: His Arms and Legs must be also bound with Straps or Bands. Then a channell'd Probe being put up into the Bladder, a Servant standing upon the Table on the side of the Chair, holds the Back of the Instrument between his two Fore-fingers on that Part of the _Perinæum_ where the Incision ought to be begun, which is to be made between his Fingers with a sharp Knife that cuts on both sides: The Incision may be three or four Fingers breadth on the left side of the _Raphe_ or Suture: But in Children its length must not exceed two Fingers breadth. If the Incision were too little to give Passage to the Stone, it wou'd be more expedient to enlarge it than to stretch the Wound {243} with the Dilatators. When the Convex Part where the channelling of the Probe lies, shall be well laid open, the Conductors may be slipt into the same Channelling, between which the _Forceps_ is to be put, having before taken away the Probe. Some Operators make use of a _Gorgeret_ or Introductor to that purpose, conveying the end of it into the Chanelling of the Probe; which is remov'd to introduce the _Forceps_ into the Bladder: And as soon as they are fixt therein, the Conductors or _Gorgeret_ must be likewise taken out. Afterward search being made for the Stone, it must be held fast, and drawn out of the Bladder: But if the Stone be long, and the Operator hath got hold thereof by the two Ends, he must endeavour to lay hold on it again by the Middle, to avoid the great scattering which wou'd happen in the Passage. The Stones are also sometimes so large, that there is an absolute necessity of leaving 'em in the Bladder. Again, if the Stone sticks very close to the Bladder, the Extraction ought to be deferr'd for some time; and perhaps it may be loosen'd in the Suppuration. Lastly, when the Stone hath been taken out, an Extractor is usually introduc'd into the Bladder, to remove the Gravel, Fragments, and Clots of Blood.