Historical Painting Techniques, Materials, and Studio Practice
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Figure 5. Detail of Lady Jal1e Grey from The ExeclItion of Lady Jane Grey.<br />
white, red lake, <strong>and</strong> black), similar in color to that used in the watercolor<br />
sketch; the presence of a thin layer of black paint above it, darkening or<br />
obliterating it, suggests a change of mind. Above it is a much warmer version<br />
of the underpaint layer, containing more red lake pigment, followed by the<br />
desired red paint (Plate 34a) .<br />
This grisaille probably represents the ebauche stage of the painting (36).<br />
When it was dry, the local color was applied. Bouvier describes the use of a<br />
series of premixed, graduated middle tones applied side by side <strong>and</strong> then<br />
blended to give an smooth passage from light to dark across each part of the<br />
painting, for both the ebauche <strong>and</strong> the final paint layers (37). The sim.plicity<br />
<strong>and</strong> precision of the layer structure <strong>and</strong> the generally close relationship between<br />
the depth of tone in the grisaille <strong>and</strong> the chiaroscuro of the finished<br />
painting, as demonstrated in the painting of Lady Jane's dress, suggests that<br />
something approaching this may have been done (Fig. 5). Only one or two<br />
quite thin, even layers of paint may be present over the underpaint, with<br />
perhaps an additional glaze or highlight. Observation of the paint surface,<br />
however, <strong>and</strong> the occasional presence of extrem.ely thin scumbles or glazes of<br />
paint (or sim.ply a greater concentration of paint medium) at the top of a<br />
paint layer reveal the careful blending of tones. One paint layer frequently<br />
appears to have been applied over another while the layer below was still<br />
fresh, enabling one mid-tone to be merged into the next. Plate 34b shows a<br />
cross section of paint from the shadow of a fold in Lady Jane's dress. The<br />
grayish paint of the shadow, consisting of lead white with a little cobalt blue<br />
<strong>and</strong> Cassel earth, merges with the creamier paint of the layer below so com-<br />
Kirby <strong>and</strong> Roy 171