*3.5. Grey Pigments*

Grey horizontal bands are present at ff. 31v (Figure 1f) and 46r (Figure 1h) in the top part. At f. 71v (Figure 1j) the vaults are rendered in grey too. In all cases, silver was used as evidenced by the XRF analysis. As will be discussed in paragraph 3.11, it seems that this was a later intervention and was therefore not due to Antoine de Lonhy.
