Advice medical, and economical, relative to the purchase and consumption of tea, coffee, and chocolate; wines, and malt liquors: including tests to detect adulteration. Also remarks on water. With directions to purify it for domestic use / by J. Stevenson.

  • Stevenson, J.
Date:
1830
Catalogue details

Licence: Public Domain Mark

Credit: Advice medical, and economical, relative to the purchase and consumption of tea, coffee, and chocolate; wines, and malt liquors: including tests to detect adulteration. Also remarks on water. With directions to purify it for domestic use / by J. Stevenson. Source: Wellcome Collection.

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    “water is rendered bright and chrystal-like ; when. approximating the coast, and conse- quently brackish, it is rendered so soft and agreeable to the taste, that if two vessels, one containing the element unfiltered, the other having undergone the process, were presented, they would be pronounced two distinct fluids. ‘Mr. Hume, of Long Acre, who has been so long and successfully employed by govern- ment in analysing waters, had two bottles sent him to analyse; the one full of all sorts of animal and vegetable matters in a state of de- composition, and strongly impregnated with gas; the other, a bottle which had contained the same foul mgredients, but had been pu- rified by the Royal Filter. “‘ In the unfiltered sample, estimating at per gallon imperial measure, he found, he says, forty-six grains and a half of solid matter, of which thirty grains consisted of impurities, and the remaining sixteen grains were the original ingredients peculiar to the water, and dissolved in it: “ for,” he observes, ‘ there is no water, however pure and wholesome, whether from deep wells, superficial springs, or any other source, that is free from saline and other solu- ble salts, not at all injurious to health.”