Dictionarium polygraphicum. The following account of the colours for painting on glass we have from the celebrated M. Felibien.

Dictionarium Polygraphicum:
Or, The Whole Body of Arts Regularly Digested.
Vol I.
London: Printed for C. Hitch and C. Davis in Pater-noster Row, and S. Austen in St. Paul's Church Yard. MDCCXXXV.
Take two thirds of flakes or scales of iron; beat them up, and mix them with one part of rocaille, or little glass beads.

For an azure BLUE.
Proceed as in the green, only leaving out the æs ustum; instead of it, use sulphur. For CARNATION. Use forett, and rocaille.

For colours of HAIR, TRUNKS of trees, &c.
Take feretto, rocaille, &c.

Take æs ustum one ounce, black-lead the same quantity, and four ounces of white-sand incorporated by fire; to which, after calcination, add a fourth part of salt-petre; then calcine again, adding a fixth part more; after which it is usual to give it a third coction before it is used.

Proceed as in the green, only leaving out the acs usium, and instead thereof use perigueux.

For RED.
Take litharge of silver, and scales of iron, gum arabick, harderia, glass beads, and blood stone nearly in equal quantities. This is one of the most difficult colours, and the Preparation is not to be learn'd but by experience.

Proceed as for green, but leaving out the as usium, and instead of it use both sulphur and perigueux.

Take sand or little white pebbles, calcine them, pound them in a mortar, and afterwards grind them on a marble with one fourth part of salt-petre added to them; calcine the mixture, and pulverize it over again, and when you are ready to use it, add a little gypsum or plaister of Paris, &c.

Grind leaf silver, mix it up in a crucible with sulphur or salt-petre; then having well beaten or ground it on a porphyry stone, afterwards grind it over again with nine times the quantity of red oker.

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