The Saltonstall Family c.1640 by David Des Granges

This painting is in oil on canvas measuring 2140 x 2762 mm (figs.1–4). The support is made from three pieces of canvas stitched together as shown in the diagram below:

The two large pieces are plain woven and have selvedges running along the top and bottom of each piece. Both have 14 vertical threads and 16 horizontal per square centimetre (figs.5–7) and are 1080 mm wide from join to selvedge. The smallest piece, a rectangular section at the top left corner, has a coarse herringbone weave; despite the difference in weave, this piece has every appearance of being an original part of the painting, rather than a later replacement for a damaged original section. The painting’s four tacking edges are present. The paint extends beyond the turnover at the top and left edges, indicating that the painting was originally larger in those directions. At some point in its history, the painting was attached to a smaller stretcher, causing considerable loss of paint. Fig.5, an X-radiograph of the father’s head and the top edge, shows this loss of paint in a broad band parallel with the top edge: this band is continuous across the painting and a similar band of paint loss is present across the bottom edge, 50mm above the turnover. When the Tate acquired the painting in the 1970s, the painting was placed onto a larger stretcher that reinstated these areas into the picture plane.

The ground is composed of a dull off-white, chalk-rich layer bound in oil and seemingly applied in two coats (figs.8–11). The priming on top of the ground is opaque pale beige (fig.12); it was applied with a streaky texture, as shown in fig.13. The ground and priming have suffered a great deal of cracking and loss due to poor adhesion to the support, particularly along the edges described above.

Infrared reflectography together with close examination of the paint surface reveal linear black underdrawing applied broadly with a brush (figs.14–18).

Two basic techniques of painting are discernible in the painting; additive work and wet-in-wet painting. Cross-sections from and surface microscopy of the costumes, carpet, tapestry and drapery reveal an additive technique with a general lay-in of plain colour overlaid when dry with folds and decorative details. For example, the red bed hangings were first painted dark red, after which lighter, brighter reds were applied on top for the folds (figs.19–21). Similarly the little girl’s red dress was laid in with two shades of opaque red paint, followed when dry with white and pink opaque decorative detail (fig.22). It is not entirely clear whether translucent red glazes would have been applied in addition to the opaque reds. If there were, they are not now present for certain either in close examination of the paint surface or in cross-section. On the other hand, there is translucent red lake pigment present in addition to opaque vermilion in the opaque red paint; this would have given a depth of tone to the brighter red vermilion pigment.

The faces and flesh tones of all the figures were done in a wet-in-wet technique (figs.22–26). Pigments apart from those mentioned are lead white, indigo, smalt, azurite, yellow ochre and other earth pigments including umber, black and orpiment.1 They were used together selectively in mixtures to form the colours we see in the painting.

Fig.27

Microphotograph at x16 magnification of the father’s black hat, showing very small-scale drying cracking

Apart from the old paint losses and cracking described above, the painting is in good condition. A few black areas have developed very small systems of drying cracks, perhaps indicating the use of siccatives in the oil (fig.27).

March 2021

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