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.

    62/286 page 12
    ftantly, and mix Atmofpheres, to be as heal- thy, iound and fweet as poffibJy they can ; and, for their own fakes7 to have them remov’d till they are made fo, if they are otherwifc. Nor fhall I add any preffing inftances, to avoid wet Rooms*, damp Beds, and foul Linnen, or to re¬ move Ordure and Nufances$ the Luxu¬ ry of England having run all thefe ra¬ ther into a Vice. 6. The Air is a Fluid\ wherein Parts of all Kinds of Bodies fwirn as in Wa¬ ter. But Air differs from Water in this, that the jirft is compreilible into a leffer Compafs, and fmaller Volume, like a Fleece of Woof cither by its own Weight> or any other Force, which Weight or Force being removed, the Air imme¬ diately recovers its former Bulk and Di- menfions again, whereas no Force what¬ ever can bring Water into narrower Bounds $ that is, Air is extreamly ela- ftick and fpringy, but Water is not at all lb^ Yet the Parts of Air would feem to be groffer than the Parts of Water: For Water will get through a Bladdery and may be forced through the Bores of Gold3 but Air will pals through neither. By this its elaftkk Force, the Air infi- nuates
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