The painter's companion [electronic resource] : or a treatise on colours. Shewing how to make the several sorts from their proper ingredients; together with the best method of colouring maps, prints, views, &c. The whole being practical improvements on the experiments of the Honourable Robert Boyle, Esq; Very useful for Gentlemen and Ladies that amuse themselves with painting in Water Colours, as well as Designers, Limners, &c.