Historical Painting Techniques, Materials, and Studio Practice

Plate 5, hft. Colorjading tests,^1837 -
18 78. Fitzwilliam Museum, UnilJwil)'
of Cambridge.

Plate 6, above. Pigmelll {(llilailicrs: j)"illl
bladder to collapsible Illbe. Fil':'lI'illi,1/1/
Museum, Universil), of Clll//Jri(!�c.