Ox gall is gall, usually obtained from cows, that is mixed with alcohol and used as the wetting agent in paper marbling, engraving, lithography, and watercolor painting. It is a greenish-brown liquid mixture containing cholesterol, lecithin, taurocholic acid, and glycocholic acid.
http://www.winsornewton.com/news/making-water-thick-or-thin-gum-arabic-and-ox-gall
http://www.neogen.com/acumedia/pdf/ProdInfo/7216_PI.pdf
http://www.usbio.net/item/O8175
Famous quotes containing the word gall:
“Love is a smoke made with the fume of sighs,
Being purged, a fire sparkling in lovers’ eyes,
Being vexed, a sea nourished with lovers’ tears.
What is it else? A madness most discreet,
A choking gall and a preserving sweet.”
—William Shakespeare (1564–1616)