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.

  • Peter Shaw
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.

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    it yields in this Decrepitation ; being that of the Spirit of Sait; (5) Its affording the true Spirit of Salt, in a denfe, white, pungent. Vapour, by Diflillation which Spirit, as well as the Salt in fubftance, turns Aqua forth into Aqua regia, and thus makes a Solvent for Gold. (6) Its melting with difficulty in a ftrong Fire * and at length paffing thro’ the Pores of the Crucible. (7) Its being recoverable from its own Spirit, by the addition of any pure and fix’d alkaline Salt. (8) Its Spirit conftitutingSal-ammoniac with any volatile Alkalior the Salt itfelf affording Sal- ammoniac, by Sublimation, after being digefted with Urine. (9) Its remaining diffolved by com¬ mon Water, in the proportion of about fix oun¬ ces to a Pint. And (1 o) its faculty of precipitating Silver diffolved iA Aqua forth \ fo as to increafe the weight of the Silver, and render it volatile in a ftrong Fire. A previous knowledge of thefe Properties of Sea-Salt may fufficiently enable us to difcover it in a Mineral Water-, or under whatever form, or difguife, it may happen to be met with. 13. The known Ways of difcovering whe¬ ther Sea-Salt be contain’d in a Water, feem redu¬ cible to thefe three viz. (1) Addition to the Water (2) Evaporation, and Addition to the dry Matter and (3) Cryftallization. (1) By Addition to the Water. 14. Cafe\.~\ To two ounces of pure diftill’a com¬ mon Water, contain’d in a white, cryftalline, cylindrical Glafs, add, drop by drop, four Grains of a pellucid Solution of Silver, made in Aqua fortis, with one ounce of refined Sil¬ ver to four ounces of proof Aqua fortis; and no Milkinefs, Cloudinefs, Change of Colour, or Tranfparency -will appear in the Water. ifrCaftll.]
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