• Tempera, also known as egg tempera, is a permanent fast-drying painting medium consisting of colored pigment mixed with a water-soluble binder medium (usually a glutinous material such as egg yolk or some other size) (ref: Wikipedia)
• Ox gall is gall, usually obtained from cows, that is mixed with alcohol and used as the wetting agent in marbling, engraving, lithography, and water colour painting. It is a greenish-brown liquid mixture containing cholesterol, lecithin, taurocholic acid, and glycoholic acid. (Ref: Wikipedia)…