The art of glass shewing how to make all sorts of glass, crystal and enamel : likewise the making of pearls, precious stones, china and looking-glasses : to which is added, the method of painting on glass and enameling : also how to extract the colours from minerals, metals, herbs and flowers ... : illustrated with proper sculptures / written originally in French, by Mr. H. Blancourt, and now first translated into English ; with an appendix, containing exact instructions for making glass-eyes of all colours.

CHAP. CLXI. To make Enamel of Violet-colour.

THIS Colour as it is the nearest to it, succeeds the Purple, and is a mixture of Red and Blue, 'tis worn by the Fathers of the Church Militant, for their proper Livery, as being altogether Heavenly, and by which the Character which they bear is best signi∣fied.

To make it, take six pound of Principal Powder, as in Chap. 148. two Ounces of Manganese of Piedmont prepared, and forty eight Grains of thrice calcined Scales of Copper, make 'em all into a very fine

powder, and being well mixt put them together into your White glazed Earthen Pot in the Furnace, let it melt and digest, then cast it into Water, and dry it, put it again into the Pot, and let it refine very well; try its Colour, and if 'tis agreeable, take it and cake it, and you'll have a very fine Violet-co∣lour'd Enamel, proper for all manner of Goldsmiths Work of that sort.