To whiten green Ivory, and restore that which is spotted.

Take unslacked Lime, and put it with wa∣ter into an earthen Pot, in which shall be the Ivory you would whiten, put it upon the fire, and make it boil till such time you see the Ivory is white; to be polished it must be turned in a Lath; after having worked it as you desire, take some of the Lime and Pum∣mice stone in very fine Powder, and with wa∣ter rub till you see it every where well co∣loured; to polish, you must first warm it, tur∣ning it in the Lath and rubbing it with a white Linnen Cloth and a piece of Sheeps Skin. When it is very hot, take Cerus with some Sallet-Oyl, and rub it till it is dry with Cerus alone; and at last only with a white Cloth very dry, and your Ivory will be very white and smooth.