Verditer, a preparation of copper, which is occasionally used by painters as a blue, but more generally, in combination with a yellow pigment, for a green colour. It is obtained in the following manner : - Let pure copper be dissolved in aqua-fortis; pulverized quick-lime be added to the solution ; and the whole be well stirred. When the precipitate has subsided, it must be repeatedly washed in pure water ; levigated while moist; and from 5 to 10 parts of quick-lime be incorporated with 100 parts of such precipitate: after which it is fit for - See also vol. ii p. 37.