Mr. Harness' system of electropathic treatment : sufferers from any nervous or organic disease should not give way to despair. / The Electropathic and Zander Institute.

Licence: Public Domain Mark

Credit: Mr. Harness' system of electropathic treatment : sufferers from any nervous or organic disease should not give way to despair. / The Electropathic and Zander Institute. Source: Wellcome Collection.