An essay of health and long life / By George Cheyne.

  • George Cheyne
Date:
1725
Catalogue details

Licence: Public Domain Mark

Credit: An essay of health and long life / By George Cheyne. Source: Wellcome Collection.

    273/290 page 221
    a limited Time, the Appetite and Conco&ions failing, the Fluids are ieflened and fpent on the continual Re¬ pairs of the Solids, and thereby lofe their Nature, and become firm and hard. For by infinuating themfelves into all the Pores of the Solids, and the Interftices of their Parts, and ftraitening. and damming up the fmall Vefiels, which carry in Mourifhment to the in¬ ternal Subftance of the Solids, and fo depriving them of their Moijlure and Lubricating juices, thefe Solids come at laft to harden, ftiffen and fix, and thereby lofe their Elafticity and Springi- nefs. Here the Procefs is Mechanical and Neceffary. Age and Time, by weakning the Concoftions, impairing the natural Heat, which conftfts in a brisk and extended Circulation of the Juices, by the turning thofe Juices into [olid Subftances, and thereby fixing and hardning thefe Solids, and depriving them of their due Elafticity, the Fluids circulate with lefts Velocity and Force, and fteldom reach the Extremities and fmallejl Vejfels, but pafts through the more patent and larger Vejfels, by their biggejl lateral Branches. And if with all thefe unavoidable and irremediable Circum-
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