Clark, John Heaviside: A Practical Essay on the Art of Colouring and of Painting Landscapes in Watercolours with ten illustrative engravings. London: 1807. Printed for and sold by Edward Orme, Bond Street, the corner of Brook Street. Where are also sold Books of Instructions in every Branch of Drawing, Colours, Drawing Books and every Requisite used in Drawing. [4], 28 pages with 10 numbered aquatints of which six hand-coloured; plate IV misnumbered 'V'. A wide margined example, of the rare first edition of this important work on colour theory and its application. Clearly an artists copy with signs of use and minor sketching on one blank reverse of a plate. The original wrappers rebound in a modern cloth binding. Boards. 38 Ã 17cms.