Note 1881 — BOOK XXXV. AN ACCOUNT OF PAINTINGS AND COLOURS.
John Bostock translation
See B. xxxiii. c. 20. “One may readily conceive that this must have been a ferruginous ochre, or kind of bole, which is still used as a ground, poliment, assiette.”—Beckmann, Hist. Inv. Vol. II. p. 294. Bohn’s Edition.