Take Verdigrease, Mercury sublimated, vitreoll, and allum, a like quantity, beate all to powder, put them into a glasse, and let it stand so halfe a day, and stirre it often, then lay on the plate, waxe, mingled with Linseed oyle, or red lead with Linseed oyle, and write in it that you meane to grave, then put the water on it, and let it so remaine halfe a day, if you will have it very deepe, let it lye longer. If you will engrave Images, &c. lay the waxe on the Iron or Steele, thin, and draw what you will theron, that it may touch the mettall, then put the water into the strokes, and it will be engraven.
How to engrave on a flint stone.
Take a Flint, and write on it what you will, with the fat or tallow of an Oxe, afterward lay the flint in vineger, foure dayes.
FINIS.
Place this betweene folio 14. and 15.
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