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CHAP. IV. Instructions and Prescripts for the Cure of the Pleurisie.
THe Pleurisie is an Inflammation of the Pleura caus'd by a boiling Blood flowing into it through the Vertebral Arte∣ries, and there growing clammy, with a continual and acute Feaver, a pricking pain of the side, a Cough, and a difficulty of breathing.
When a Pleurisie commencing passes into a Peripneumonia; or an Empyema, or inclines to a Phthisick, there is a proper method of Cure particularly set down in each of those Diseases for it: But as to what concerns our present purpose, Three Indications present themselves for a primary and simple Pleurisie, viz. a Cura∣tory, Preservatory and Vital one.
The First Indication takes care that the Inflammation or Ob∣struction of the Blood in the Lungs be remov'd by all possible means as soon as may be: Wherefore in a Pleurisie let a Vein be open'd, and so the strength holds, and the Pulse be strong, let the Person bleed freely; and truly it is much better to take a large quantity of Blood at first, and every time after (as often as there is need to repeat it) than to Bleed often, and to draw a a little at a time; because a great many portions of the Blood grown clammy and degenerated into a viscous nature, are gathe∣red together about the part affected; which unless withdrawn from thence, upon a great emptying of the Vessels by a large emission of Blood, so that the greatest part of them flow forth, the bleeding will be frustrated of its desired affect: Its all one in which Arm the Vein be open'd, though its now common∣ly done on the side affected.
But if by reason of the weakness of the Pulse, and the failing of the Animal faculty, you ought neither to Bleed at First, nor to repeat it though the pain be very urgent; then Cupping-Glas∣ses with a Scarification being apply'd to the place griev'd, may very well supply its place. Moreover to take away the Inflam∣mation of the Pleura, besides an Evacuation of Blood by breath∣ing a Vein freely, or by Scarification, its Serous and other Ex∣crementitious humours must also be set upon, and be gently purg'd forth of its Mass, and from the Bowels by Siege, Urine, and Sweat Strong Purges are justly forbidden, because they