Fig. 2From: Charcoal or black stone? Reconstructions as a tool to study the behaviour of dry underdrawing materials within the paint structure of sixteenth century panel paintings©HPM & AJC, HERCULES Lab—U. Évora, PortugalStructure of the preparatory layers in the reconstructions. The nature and composition of the intermediate layers (animal glue, linseed oil and imprimatura) are specified in Table 2.Back to article page