Field , George , ?1777-1854 , chemist and artists' colourman Newton , Henry Charles , fl 1804-1825 , chemist and artists' colourman

George Field: born, Berkhampstead, Hertfordshire in about 1777; educated at St Peter's School, Berkhampstead; experimented with the application of chemistry to pigments and dyes; successfully cultivated madder, (a plant cultivated for dye); invented a 'physeter' or percolator acting by air pressure to produce coloured lakes or pigments; awarded the Society of Arts' gold Isis medal for the percolator, 1816, (the apparatus is described by in Society of Arts Transactions, xxxiv pp 87-94); continued to work on preparing colours for use by artists; other inventions included a metrochrome and conical lenses; died, Isleworth, Middlesex, 1854.

Publications: Chromatics; or, an Essay on the analogy and harmony of colours (Newman, London, 1817); Chromatography, or, A treatise on colours and pigments, and of their powers in painting (London, 1835); Ethics; or, the analogy of the Moral Sciences indicated; Outlines of Analogical Philosophy, being a primary view of the principles, relations and purposes of Nature, Science, and Art 2 vols (London, 1839); Rudiments of the Painter's Art: or, a Grammar of Colouring (London, 1850); Tritogenea, or, A brief outline of the universal system; Dianoia. The third Organon attempted, or, Elements of Logic and subjective philosophy; Aesthetics, or, the analogy of the sensible sciences indicated: with an appendix on light and colors; The analogy of the physical sciences indicated; Society of Arts Transactions, xxxiv pp 87-94.