'The Ruddle Pit', 1814.
© Science Museum / Science & Society Picture Library
Hand-coloured aquatint by Robert Havell after George Walker from 'The Costume of Yorkshire' by George Walker, published 1814 by Robinson & Son of Leeds. Ruddle is a red ocherous iron ore, used for dyeing, and for marking sheep. 'The Costume of Yorkshire' recorded the social customs, pastimes and occupations of the people of Yorkshire at the beginning of the Industrial Revolution. It contained 40 aquatints together with more than 100 pages of text describing the scenes in both English and French. Its author, George Walker (1781-1856), was commisioned to produce the book by a local bookseller.