Experiments and observations on the atomic theory, and electrical phenomena / By William Higgins.

  • Higgins, William, 1763-1825.
Date:
1814
Catalogue details

Licence: Public Domain Mark

Credit: Experiments and observations on the atomic theory, and electrical phenomena / By William Higgins. Source: Wellcome Collection.

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    muriate of barytes produced a very slight cloudiness, which shewed that the whole of the acid was not removed by pressure. What remained on the fdter was sulphur mixed with some black matter. Potash, by means of heat, dissolved the whole of the sulphur which this substance con- tained, and left a black powder behind, which burned on red hot iron like char- coal, without the smallest appearance of sulphur. Carbonate of potash seemed to have very little action on it; for the small piece, exposed to it in a very moderate degree of heat, retained its shape and bulk, but readily crumbled between the fingers into a black powder, consisting, apparently, of carbon and some sulphur.* Alkohol produced no change, and ether had no effect on this substance. Presented to the flame of a candle, it burned somewhat better than sulphur, * These are to be considered the properties of the gummy substance, when produced in its perfectly elasticy'state and deprived of the acid.