Experiments and observations tending to illustrate the nature and properties of electricity. In one letter to Martin Folkes, Esq, President, and two to the Royal Society / by William Watson.

  • William Watson
Date:
1746
Catalogue details

Licence: Public Domain Mark

Credit: Experiments and observations tending to illustrate the nature and properties of electricity. In one letter to Martin Folkes, Esq, President, and two to the Royal Society / by William Watson. Source: Wellcome Collection.

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    fi will not fnap at the Application of the Finger, without the Glafs being firft made non-ele£tric by wetting. It has fometimes happen’d, if the Fin¬ ger has been applied before the in- fiammable Air has found a ready Exit from the Mouth of the Flask, that the Flafh has filfd the Flask, and gone ofF with an Explofion equal to the firing of a large Piftol, and fometimes indeed it has burft the Flask. The fame EfFedt is produced from the Spi— rit of Sea Salt, as from Oil of Vi- triol; but as the Acid of Sea Salt is much lighter than that of Vitriol, there is no Neceflity to add the Water in this Experiment. Those whoare not much acquaint- ed with Chemical Philofophy, may think it very extraordinary, that from a Mixture of cold Subftances, which both conjundtly and feparately are un- inflammable, this very inflammable Vapour fhould be produced. In or- der
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