Dictionarium polygraphicum. How to make upon art open white ground fillets and branch'd work.

Dictionarium Polygraphicum:
Or, The Whole Body of Arts Regularly Digested.
Vol II.
London: Printed for C. Hitch and C. Davis in Pater-noster Row, and S. Austen in St. Paul's Church Yard. MDCCXXXV.
First lay your frame or other work with boiling size, as is directed for laying upon white to gild with burnish'd gold; and having siz'd it, take lamp-black well ground with water, then size it as the white, and go over your work with it five or six times, and afterwards rush it: then grind some of the same white, and grind it with as much yolk of egg as may make the white polish, and go over the work once or twice with this; and when it is dry, burnish the white with a tooth, then with your iron draw upon the white fillets, branch'd works or portraits, according to your fancy, till the black appears.

The freezes of your frame will seem to be of ivory, and the black will seem to be engraved, or pieces of ebony inlaid in Ivory.

But to make it the better to resemble ivory, you should have by you a little piece of polish'd ivory, the better to represent its colour, which is not so white as chalk; but a little inclining to yellow, and this may be imitated by grinding with your chalk a little yellow oker, or a little pale masticote, or the bones of sheep's trotters burnt and ground to powder.

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