Outlines of the origin and progress of galvanism : with its application to medicine : in a letter to a friend / by William Meade.

Date:
1805
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of the origin and progress of galvanism : with its application to medicine : in a letter to a friend / by William Meade. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    of the body, many curious and entertaining experi- ments may be performed. For inftance: If a rod of zinc be applied to the upper, and another to the under furface of the tongue, and thefe two metals then brought into con- tact, a very pecuhar fcnfalion > fuddenly takes place, refembling a veiy flight eleftrical fliock, and ac- companied with fuch a fubacid tafte in the mouth as is difficult to defcribe. Secondly, If a piece of zinc be placed high up between the upper lip and gum, (or, what frequent- ly fucceeds better, truft far up the noHrils,) and a filver rod be introduced under the tongue, as foon as the other ends of thofe rods are brought into cQjita£l a very vivid fenfation is perceived, and a fenfible flafii of light appears before the eyes. Thirdly, Place a plate of filver on'a table, and over this a plate of zinc, fomewhat lefs in diameter, fo as to leave part of the filver edge appear all round, then on this plate of zinc lay a leech, or a fmall worm ; when the infecl attempts to move off the zinc, he receives fuch a fliock on touching the filver, as to indtlce him to return^ and having tried it in ihft'erent points, with the fame fuccefs, he ge- nerally gives up the point, and quietly fubmits to his imprifonment. Fourthly,
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