A treatise on the Bath waters / George Smith Gibbes.

  • George Smith Gibbes
Date:
1800
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the Bath waters / George Smith Gibbes. Source: Wellcome Collection.

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    third part remained, which could not be rendered soluble by these means, although I added forty drops of the nitrous acid.” The Doctor has subjoined the following note .—« The nitrous acid was used here preferable to the vitriolic, because the resi- duum which remained undissolved was pro- bably selenites, which is not affected by the nitrous acid; but on the addition of a su- perabundant quantity of vitriolic acid dis- * solves easily in water, although so difficult of solution in the state we generally see it. This may perhaps, account for its being con- tained more largely in some springs, than its solubility in water would account for by any other means, and is, in my opinion, a pre- sumptive evidence, that the vitriolic acid is present in its separate state in some mineral waters.” To this insoluble part of the residuum I added a large quantity of the strong and di- luted vitriolic acid, and I found it remain undissolved. This substance therefore ac-
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