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PLATE IV.
The upper leaves are rose-leaves, shewing the front sides as they appear
about July, when they begin to change their colour; they then take a variety
of tints. The first tint is laid in with gamboge and Prussian blue; the second
is the same tint touched on the first, when dry. Observe to let every tint
dry before you put on another. The third is gamboge, blue, and a little sap
green. Then put in the tints upon the edges of the leaves with yellow oker,
rather strong; after which, strengthen the darkest green tint by adding more
blue and sap green; and with this last tint cut up the veins; then touch
the edges of the raffles of the leaves, with burnt terra de siena.
You will now discover the advantage of what I so strongly recommended in
the Treatise; that is, the acquiring a freedom of pencil; for if you have
not made yourself perfect master in that lesson, you will run great hazard
of spoiling the beauty of the leaf, because much depends upon the nicety
of cutting up the veins, and the little touches on the edges of the raffles.
The under leaves are rose-leaves, as they are seen in a more advanced period
of the autumn, when scarcely two leaves are to be found of a colour; so that
it is almost impossible to paint them of such a colour, but what you may
find some of the same tint; here you may exercise your fancy, for nature,
at this season, bids
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