CHAP. CLXVIII. The Way to make Enamel of a Blood-colour Red.
SINCE we have given a small Elogy to every other Colour, 'tis unjust for us not to continue the like on this, which is a true Symbole of Blood, by which the Glory of the Martyrs, who with so much Generosity and Courage shed theirs for the Faith of Christ, may be represented as well as of those many Brave and Heroick Persons, who have interposed for the Preservation and Support of Church and State, 'tis therefore an Illustrious Badge of Eminent Cou∣rage. Thus Alexander, Hannibal, Scipio, and very many other Great and Noble Princes, chose this Co∣lour for their Livery, and for their Shields.
To stain Enamel of this Colour, take ten pound of common Frit, mentioned in Chap. 12. add thereto six pound of Glass of Saturn, prepared as in Chap. 82. the whole made into a very fine powder, must be put into a glazed Earthen pot at the Glass-house Furnace, to melt, boil and refine; after this cast thereon pow∣der of thrice calcined Copper, as in Chap. 34. at dis∣cretion, stirring it all about that they may incorpo∣rate together with powder of red Tartar, until the Mass become red as Blood, observing whether the Colour be too pale, and if so, continue to put in more of these Powders of Copper and Tartar, until it be perfectly stained; and thus you'll have a delicate