Plate 4a, above. Jacques
Louis David, 1748 -1825,
The Sisters Zenalde and
Charlotte Bonaparte,
- Oil on canvas. The
J. Paul Getty Museum,
Malibu (86.PA. 740 ).
Plate 4b, right. Detail Jrom
The Sisters Zenalde and
Charlotte Bonaparte, il
lustrating the imperceptible
shift from dark to light tones
resulting from physically
blending pigments on the
suiface oj the painting.