Cross-section Analysis During Treatment

This sample comes from the background of Elizabeth James where a thin layer of black overpaint covering a small nearby loss extends onto the original paint surface. Partial cleaning had already removed the upper varnish layers. The remaining surface layers include: (1) the black layer of restoration paint; (2) a thin varnish layer; and, (3) a pigmented varnish layer like that of #5 in the previous sample from William James. In this case, the recent conservation treatment took the cleaning only part way through layer #3 so as not to risk damage to the already disrupted original paint surface. Other similarities with the sample from William James include: (4) the discontinuous upper dark-brown paint layer that appears dished; and, (5) corresponding remnants of a discontinuous clear coating that fluoresce bluish under UV illumination, possibly indicative of a proteinaceous material.

Next: Cross-section Analysis: Scanning Electron Microscopy (SEM)
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