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  • Inventions: a rat-trap (top) a bellows (centre) and an electrical capacitor [?] (below). Engraving.
  • Electricity: an electro-static machine charging three Leyden Jars. Engraving.
  • Electricity: a large electro-static generator machine in use in the Colosseum, London, with many condenser jars and four operators. Wood engraving, 1839.