An x-radiograph uses x-rays to produce an image based on the density of materials.  Here the lightest areas correspond to dense pigments, such as lead white. This overall x-radiograph of Elizabeth James not only shows the portrait, but also shows the painting's wooden stretcher support and the metal tacks used to secure the canvas along the outer edge of the stretcher. The x-radiograph also attests to Hogarth's straightforward approach to applying paint. He made very few adjustments to the composition.

Next: X-radiography: Presence of Cusping and Damage
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