Enamel, Green

Prep. 1. ‘Flux’ or ‘frit,’ 2 lbs.; black oxide of copper, 1 oz.; as before. 2. As the last, but adding red oxide of iron, 1 ⁄ 2 dr. Le decisive. 3. Copper dust and litharge, of each 2 oz.; nitre, 1 oz.; sand, 4 oz.; ‘flux’ or ‘frit,’ q. s. 4. From transparent ‘frit,’ any quantity; oxide of chromium, q. s. to colour. Colour superb; it will stand a great heat; in common hands, however, it frequently turns on the dead-leaf tinge. 5. Transparent ‘flux,’ 5 oz.; black oxide of copper, 20 to 40 gr.; oxide of chromium, 2 gr. Resembles the emerald. 6. From blue and yellow enamel mixed in the required proportions.