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.

    271/286 page 221
    a limited Time, the Appetite and Concoctions failing, the fluids are kffened 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 Interfaces of their Parts, and ftraitening and damming up the fmall Veffels, which carry in Nourilhment to the in¬ ternal Subftance of the Solids, and fo depriving them of their Moiflure and Lubricating Juices, thefe Solids come at laft to harden, ftiffen, and fix, and thereby lofe their Elajlicity and Springi- nefs. Here the Procefs is Mechanical and Neceffary. Age and Time, by weakening the Conco&ions, impairing the natural Heat, which confifts in a brisk and extended Circulation of the juices, by the turning thole Juices into [olid Subftances, and thereby fixing and hardning thefe Solids, and depriving them of their due Elafticity, the Fluids circulate with lefs Velocity and Force, and feldom reach the Extremities and fmallefl Veffels, but pafs through the more patent and larger Veffels, by their biggeft laterial Branches. And if with all thefe unavoidable and irremediable Cir-
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