Colour and colour printing as applied to lithography : containing an introduction to the study of colour, an account of the general and special qualities of pigments employed, their manufacture into printing inks, and the principles involved in their application (1885)
Richmond, W. D. n 82236154 · London : Wyman & Sons · leaf 20
8 COLOUR AND COLOUR PRINTING. follows that the mixture of green and orange is just the same as mixing purple with yellow, if the latter is kept properly predominant. It will be seen that in the modifi- Fig. 3. cation of our diagram in Fig. 4, we have, at the outer crossings of the circles,… … and the application of the reasoning applied to orange and green in connexion with citrine to the other compounds, it
Chromolithography
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.