Turner’s inscriptions read:
12 oz. of Gum Mastick
5 oz of Gum A[rabic]
12 oz. of Soft Water
4½ of G. Arabic
8 of Wax
4 oz. of G.A.
8 oz. of S. Water
2 of Mastick. Boiled and Beat | till it becomes a paste| then add 5 oz. of wax.
More water makes like Cream
Joyce Townsend, Senior Conservation Scientist at Tate, identifies these recipes as being for bodied paint media that would be added to oil paint on the palette: ‘They would give a somewhat limp impasto, but would be good for clouds. Megilps give similar effects.’ She adds that the last two recipes would fit results from her analyses of Turner’s materials but that in the first, gum arabic would not always be detectable by analysis, so it is harder to prove whether he used it.
David Blayney Brown
June 2010