Note 36 — Chapter V · THE PORCELAIN OF CHINA Introductory—Classification—The Sung Dynasty (960-1279)—The Mongol or Yuan Dynasty (1280-1368).

It is possible, however, that some of the various tints of brown used from early Ming times, especially that known to the Chinese as ‘old gold,’ may have been suggested by this copper lustre. The ground on which this lustre is superimposed in some old Persian wares is of a very similar shade. Dr. Bushell mentions a tradition that the old potters tried to produce a yellow colour by adding metallic gold to their glaze, but that the gold all disappeared in the heat of the grand feu. They had therefore to fall back upon the or bruni.