1. Digital X-radiograph of Fig.2, captured
through all layers of the painting, including
the wooden auxiliary support.
Attributed works:
2. Blue boy (after treatment), by Thomas
Gainsborough. c.1770. Oil on canvas, 177.8
by 112.1 cm. (Huntington Library and Art
Museum, San Marino).
Attributed works:
3. John Joshua Kirby, by Thomas Gainsborough.
c.1754–56. Oil on canvas, 41.9 by 29.2 cm.
(Victoria and Albert Museum, London).
Attributed works:
4. Infra-red reflectography of Fig.2, showing
the preliminary lines of the abandoned
portrait, including the contours of the face,
coat, and shoulders. A dark layer of paint was
applied over the abandoned portrait, slightly
obscuring the legibility of the details in IRR.
Attributed works:
5. Detail of Fig.1.
Attributed works:
6. Detail of Fig.1, showing additional details
of the abandoned portrait’s face.
Attributed works:
7. Cross-section of Fig.2, taken at the top
fold-over edge contains, from bottom to
top: the off-white double ground layer; a
paint layer from the abandoned portrait’s
face; and the dark layer of paint that
Gainsborough applied over the abandoned
portrait followed by the thinly applied paint
of the sky for the Blue boy composition.