… and handwritten or illustrated texts on papyrus, wood, silk, parchment, paper or vellum. (2) Articles “ of … documents or texts, sometimes with illustrations, on wood, silk, parchment, vellum, paper or leather. Documents may be …
… is obtained in the hydrated form by precipitating an alkali zincate by means of sodium sulphide. White paste or … salt (e.g., sulphate) solution by hydrogen sulphide or an alkali sulphide. Yellow pigment (cadmium yellow) used by …
