[William Holman Hunt, The Scapegoat, 1854-6]
[Jerome Buckley, in The Victorian Temper: A Study in Literary Culture (1951):]
Most of the Pre-Raphaelites worked patiently with a medium over which they had little technical control; they painted, repainted, and overpainted layer upon layer of pigment; and in so doing they frequently altered their whole design after a long-pondered picture had been well begun. By blending a slow-drying varnish into their oils, they were able to match colors over protracted periods during which they could proceed deliberately with their innumerable revisions. They paid little heed to the fact that, with the darkening of the resin mixed into the very colors, their pictures so produced would eventually deteriorate beyond reclaim; for they were enabled by slow painting to attain, for a time at least, the illusion of a carefully transcribed reality.