Image
Joseph Priestley, Attributed to Ozias Humphrey (British, 1742-1810).
Credit: Courtesy of the Chemical Heritage Foundation Image Archives. Chemists" Club Collection
Two portraits of Joseph Priestly speak volumes about the differences of his life in Great Britain and his last years in Pennsylvania. In this portrait, British artist Ozias Humphrey painted Priestly in formal wig and clerical robes, peering off expressionless into the distance.