An enquiry into the contents, virtues, and uses, of the Scarborough. Spaw-waters: with the method of examining any other mineral-water / By Peter Shaw.

  • Shaw, Peter, 1694-1763.
Date:
1734
Catalogue details

Licence: Public Domain Mark

Credit: An enquiry into the contents, virtues, and uses, of the Scarborough. Spaw-waters: with the method of examining any other mineral-water / By Peter Shaw. Source: Wellcome Collection.

    158/190 (page 142)
    12. Having, therefore, difcover’d a Method of feparating this Air frotn the Water, and col¬ lecting it, in a palpable form, diftinCt from the other Principles ; we fhou’d next proceed to examine its Properties and EffeCts ; with a View to difcover, whether it differs from the common^ or atmofpherical Air : but as we have hitherto made no confiderable Progrefs in this part of the Enquiry ; all that can fairly be faid of it at prefent, is, that it appears to approach the Nature and Properties of common Air ; and as fuch, we fhall here confider its Ufe in the Wa- ter ; referring, for farther Satisfaction, to fu¬ ture Trials, and our Chemical Lectures, efpe- cially the two that treat of Water and Air. 13. As, according to the Obfervations and Experiments above delivered, the Air appears to be under a State of compreffure in the Wa¬ ter ; fo as readily to efcape, upon the firft Op¬ portunity offer’d ; hence this Air fhou’d feem to exert a kind of ftruggling Motion in the Water •, fo as to keep the Particles thereof at a greater diflance from each other, or render the whole fpecifically lighter, than after this Air has. deferted it. And accordingly, the fpecifick Gravity of the Water appears to be confidera- bly increafed upon the Avolation of the Air ; tho’ the Mineral Spirit, perhaps, may ftill re¬ main behind. But this alfo requires to be far¬ ther verified ; as it might eafily be by means of the Experiment made with a Bladder, tied over a very llender long-neck’d Glals, fill’d with the frefh Water; and finding the Surface thereof fall lower, when the Air is feparated and col¬ lected in the Bladder ; and prefently removed from the Glafs. 14. If this fhou’d prove the Cafe, we mighr hence, perhaps, infer that one Ufe of the Air to