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CHAP. IX. Instructions concerning Cordial Medicines, and A∣lexipharmicks, or Preservatives against Venome, with Prescripts of them.
IF the thing be duly considered, the notion of Cordial Medicines was not well introduc'd, but is a meer vulgar errour; for since it is not the Heart which is the Subject of Life, but chiefly, and in a manner only the Blood, and in regard the Soul it self (on whose existence and act in the Body Life depends) is founded partly in the Blood, and partly in the united stock of Animal Spi∣rits, it plainly sollows that Medicines which preserve Life entire, or restore it when in danger, do rather and more immediately re∣gard these parts of the Soul, to wit, the Blood, and Animal Spi∣rits than the Heart, which is a meer Muscle, serving for the Circulation of the Blood, and as often as it slackens in performing this duty, or gives it off: This does not happen through its own fault, but through that of the Blood and Animal Spirits, by which it is actuated.
Therefore to know the ways and manners of working of those Medicines which are call'd Cordials, we must consider these two things, viz. First, how many, and particularly what ways the Blood being ill dispos'd, and often endangered, either as to its accension, or mixture, requires Physical helps, which may preserve or cor∣rect it. Secondly after what manner by reason of a defect or de∣linquency in the Animal Oeconomy the Heart is hindred, or per∣verted from its due motion, so that Medicines are Indicated, which encrease the stores of the Spirits, and better compose them. [To be well instructed concerning these things, read Dr. Willis at large.]