Frontispiece, 'The Galvanoscope'.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Frontispiece, 'The Galvanoscope'. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Frontispiece, 'The Galvanoscope'. Wellcome Collection. Source: Wellcome Collection.