a British chemist and author. Benzol, its Nature and Utility (1849) was a pamphlet. Mansfield's major work in chemistry was the Theory of Salts, completed in 1855. In September 1850 a balloon machine constructed at Paris led to his Aerial Navigation. Mansfield wrote several papers in Politics for the People, edited by Maurice and John Malcolm Forbes Ludlow, and then in the Christian Socialist. His letters from South America, published as Paraguay, Brazil and the Plate (1856) by Kingsley, contain descriptions of Paraguayan society, scenery, plant and bird life, and a scheme for the colonisation of the Gran Chaco; a sketch of the history of Paraguay formed the concluding chapter of the volume.
