Leaflet for a work entitled 'Cases of successful practice with Perkin's Patent Metallic Tractors'. Therapeutics 1801
Glass leyden jar from a d'Arsonval-type high-frequency electrotherapy apparatus Therapeutics 1890-1920
Cylindrical induction coil of vulcanite with multi-core mounted on wooden base with trembler Therapeutics 1890-1900
Late C19 shocking coil electrotherapy apparatus with rheostat and milliammeter Therapeutics 1870-1940
Electromagnetic machine in oak case incorporating induction coil and dry cell battery Therapeutics 1910-1920