Dictionarium polygraphicum. Observations on green colours.

Dictionarium Polygraphicum:
Or, The Whole Body of Arts Regularly Digested.
Vol I.
London: Printed for C. Hitch and C. Davis in Pater-noster Row, and S. Austen in St. Paul's Church Yard. MDCCXXXV.
Verdegrease. It is a good Green, but subject to decay; being dry upon paper, it will be of a higher colour than when first laid on; therefore to preserve it from that fault, dissolve sapgreen, and it keeps its colour. You may make it fine, by ex tracting its tincture with spirit of vinegar, and then evaporating it to a driness, an ounce of this will be worth ten ounces of the other.

Verditer is a light Green, seldom us'd in any thing but colouring landscapes, which seem afar off; and it is good for such a purpose, because it is inclining to blue.

Sap Green is a dark, dirty green, never us’d but to shadow other greens in the darkest places, or to lay upon some dark ground behind a picture, which ought to be of a dark Green; but you may do without this colour, for indigo mixt with yellow-berries makes just such another colour.

Copper Green is an excellent transparent colour of a shining nature, if thickened with the sun or over a gentle fire. It is the most us'd of any green in washing of prints or maps, especially in colouring of trees, ground, grass, &c. for it is a most perfect grass Green.

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