Brookshaw, George / A new treatise on flower painting, or, Every lady her own drawing master: containing familiar and easy instructions for acquiring a perfect knowledge of drawing flowers with accuracy and taste: Also complete directions for producing the various tints.
Plate II, pp. 26 ff.
26 is better to err on this side, and keep the shades faint. When a bungling manner is once contracted, it will be more difficult to correct it, than to produce an improvement upon a soft method. PLATE II. The two upper sprigs are young rose leaves, representing the under sides, which are always of a bluer green amongst all leaves, or inclined to a pea green. These are laid in with a faint tint, made of gamboge and Prussian blue. The second tint is a repetition of the first, but a very little stronger. The third is made still stronger, with more blue and yellow: for a finish, cut up the veins with the last tint, but a little stronger still. The two under sprigs are the same leaves as above, representing their fronts. The first tint of these is gamboge and Prussian blue. You will do well in all cases, as I observed before, to compare your tint, and see that it is exactly the same as the pattern. It is as easy to imitate the same tint, as to make any other. The second tint is made by repeating the first, when dry; for, without adding any more colour, you will find the same tint you laid the leaves in first, will, by touching upon that, make it so much darker, as to appear to have been touched with a darker tint. In the third tint, take a little sap green, with the gamboge and blue, and add a little more sap green, mixed with more blue, for the last darkest touches, to cut up the veins with.
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