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AMONG our Rose-colour Enamels this seems the finest; to make which, take four Pound of Crystal ground, of Chap. 163. let it melt in a glazed Pot at the Glass-house Furnace, cast it after∣wards into Water, and melting it over again, add by little and little an Ounce and half of Calx, prepa∣red
as in Chap. 148. stirring the Metal every time to incorporate, then let it alone for a little while, until you perceive it of an Ash-colour; when it comes to that forbear putting in any more Calx, lest you make it too white; then refine the Mass, and after add to it Minium two Ounces, purge, refine, and throw it out into Water, and putting it into the Pot, let it stand to melt and purifie over again about eight Hours, then put in an Ounce and half of red thrice calcin'd Copper, and as much crude white Tartar, with a Dram of Blood-stone, and the like quantity of fixt Sulphur, in Chap. 165. these pulverized very fine and mixt together, stir the Metal and incorporate them very well together; afterwards see if the Co∣lour answers your expectation; if it be too deep, add a little more Manganese to weaken it, if it be too pale, improve it with some more of the last Compo∣sition of Copper, Tartar, Blood-stone and Sulphur, until it be to purpose: And thus you have an Enamel of an exceeding fair Rose-colour.