SMITH, Marshall, The Art of Painting According to the Theory and Practise of the Best Italian, French, and Germane Masters. Treating of The Antiquity of Painting. The Reputation it allways had. The Characters of severall Masters. Proportion. Action and Passion. The Effects of Light. Perspective. Draught. Colouring. Ordonnance. Far more Compleat and Compendious then hath yet been publisht by any, Ancient or Modern. By M. S. Gent., London, The Vendüe, 1692.1 quotations
And lastly you must take care in the Colouring of the Harmony which makes the variety of Colours agree, supplying the Weakness of some by the Strength of others, to sustain them, as by a Consonance well manag’d, where they must neglect on purpose certain places, to serve for the Basis and Repose of the Sight ; and to raise up those which by their Briskness keep upmost. And likewise of the Degradation, where the more easely to Proportion the Degree of Colours that fly back, we must reserve some of the same kinde and entire purity, and then to compare them which ought to be a far off, according to the Perspective Lines, to justify the Diminution ; observing the Quality of the Air, which being charg’d with Vapours, duls them more then when it is Serene.