An experimental inquiry into the constituent principles of the sulphureous water at Nottingham near Weymouth ... with observations relative to its application in the cure of diseases / [Robert Graves].

  • Graves, Robert, 1763-1849
Date:
1792
Catalogue details

Licence: Public Domain Mark

Credit: An experimental inquiry into the constituent principles of the sulphureous water at Nottingham near Weymouth ... with observations relative to its application in the cure of diseases / [Robert Graves]. Source: Wellcome Collection.

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    that the^ nature of the'alkali alfo might be equally afcertained. After (landing feme time, a whitifh precipitate enfued; which affords a very fufficient proof that it was the vegetable alkali with which the marine acid was united; for had the fofiile alkali only been prefent, no decompofition would have taken place, becaufe it poffeffes lefs attrac¬ tion for the tartareous acid than for the marine (e). The refiduum, which proved infoluble in pure cold water, was boiled for a quarter of an hour, in about five hundred times its weight of diililled water, and the liquor af¬ terwards filtered. To the filtrated folution I added a portion of aqua kaliy which quickly produced confiderable turbidnefs, and a white precipitate enfued. This colledled ‘by filtration amounted to fomething more /I than three grains; which, one may reafonably % « (e) Though the tartareous acid, according to Bergman and others, has lefs affinity with alkalis than the mineral acids, yet it decompofes in part fulphate, nitrate, and muriate of kali; and feparates fuch a portion of their bafe as is required to convert it into the ftate of tarta¬ reous acidule, gr cream of tartar. ♦'And as it does not produce the fame effe£l on nitrate and muriate of foda, it has been advantageoufly em¬ ployed as an adequate teft todifeover the fpecies of fixed alkali combined with the muriatic acid in medicated waters. fuppofe. /