Note 1930 — BOOK XXXV. AN ACCOUNT OF PAINTINGS AND COLOURS.

See Chapter 39, where this process is more fully described. “‘Ceræ,’ or ‘waxes,’ was the ordinary term for painters’ colours among the Romans, but more especially encaustic colours, which were probably kept dry in boxes, and the wet brush or pencil was rubbed upon them when colour was required, or they were moistened by the artist previous to commencing work. From the term ‘ceræ’ it would appear that wax constituted the principal ingredient in the colouring vehicle used; but this does not necessarily follow, and it is very improbable that it did; there must have been a great portion of gum or resin in the colours, or they could not have hardened. Wax was undoubtedly a most essential ingredient, since it apparently prevents the colours from cracking. ‘Ceræ’ therefore might originally simply mean colours which contained wax, in contradistinction to those which did not; but was afterwards applied generally by the Romans to the colours of painters.”—Wornum, Smith’s Dict. Antiq. Art. Painting.