Modern curiosities of art & nature extracted out of the cabinets of the most eminent personages of the French court : together with the choicest secrets in mechanicks, communicated by the most approved artists of France / composed and experimented by the Sieur Lemery, apothecary to the French king ; made English from the original French.

For the same after a more easie manner.

Your Work being covered with burnisht Gold or Silver (it matters not which) mix and grind Lamp-black and Umber together very well with Water, taking care you put not so much Umber as to destroy the Black; then add some of the Yolk of an Egg, which grind with it, and lay it on your Work with a soft Pencil or Brush very smooth, when dry (if you find cause) give a second laying of the same Black, and with an Ivory Point very smooth, discover your Work; if the Black come not easily off, then there was too little of the Yolk; if the Stroaks be too broad and ragged, then there was too much Yolk of Egg; this way of discovering the Gold, is more shining than the other, but be sure to be careful that in varnishing, you pull not off the Black, nor cause it to fully, to that end, be sure to work with a soft Pen∣cil and smooth Stroak; you need not much

fear the laying on the Varnish the second time, provided it be not too thick, and that it be Oyl of Spike Varnish.