A new experimental inquiry into the nature and qualities of the Cheltenham water / [A. Fothergill].

  • Anthony Fothergill
Date:
1788
Catalogue details

Licence: Public Domain Mark

Credit: A new experimental inquiry into the nature and qualities of the Cheltenham water / [A. Fothergill]. Source: Wellcome Collection.

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    [ 20 ] degree of tranfparency. Thefe, together with its fpecific gravity, temperature, and nature of the furrounding foil, to a nice obferver, will afford con- fiderable information. ^ X Thus with refpedl to 'T'afie, the aerial acid gives a gentle fmartnefs or poignancy;—vitriolic or nitrous falts, a bitternefs;—Hme or felenite, a flight aufle- rity ;—alum, a fweetifh aftringency;—mineral al- 1 k kali, and marine fait, a naufeous brackilhnefs;— copper, a flight tafte of brafsiron, an inky talte. - As to Smell, aerial acid diffufes an agreeable pe¬ netrating odour like that of fermenting liquors ;— hepatic air, an odour like that of a foul gun, or ig¬ nited gunpowder;—^fliagnant and corrupted waters emit a putrid offenflve fmelL Refpcdling Colour, Though good water is en¬ tirely without colour,, yet colourlefs, water is not alwaysgood. A brown, reddifh, or yellow colour, betrays feveral animal, vegetable, or mineral impu¬ rities ;—a blue indicates vitriol of copper;-—a green, or variegated film, vitriol of iron;—and a yellow ochrey fediment, puts this matter beyond a doubt. Tranjparency, A cryflal clearnefs indicates i great purity, though very hard waters fometimes ' alTume
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