An enquiry into the medicinal virtues of Bristol-water: and the indications of cure which it answers / By George Randolph.

  • Randolph, George, 1708-1764.
Date:
1750
Catalogue details

Licence: Public Domain Mark

Credit: An enquiry into the medicinal virtues of Bristol-water: and the indications of cure which it answers / By George Randolph. Source: Wellcome Collection.

    178/184 (page 170)
    Quantities of this combuftible Matter, at dif¬ ferent Times 5 and therefore a further Queftion will arife, how Springs are equa¬ bly fupplied, and thereby equably heated ? And here 1 beg it may be obfervU, that I do not conceive mineral Waters to be im¬ pregnated in the narrow Parts of their Channels, as they pafs along 5 but by Means of fome cavernous Hollow, through which they run, and in which they receive their Virtues j which Caverns, being fuppofed full of mineral Effluvia, I fay, the Water will be equably impregnated, either if the Air enclofed, is kept in an equable Degree of Heat, or the Water is faturated s both which are portable Cafes. By Saturation, I mean the taking up as great a Quantity as the Water will bears in which Cafe, as here is mineral Matter fufficient, the Water will be always faturated, and fo carry a like Quantity at all Times. All mineral Waters, then, arife cither from impregnated Water, or Air, or both. By impregnated Water, I mean Water imT pregnated with any Subftance foluble in it s and under this Head may be rank'd all fuch as owe their Virtues to Salts, tho'Air is probably aflifling to moll of them. By