Photomicrograph under cross-polarized transmitted light of a thin section of a casting core. The different inclusions are sorted according to their gray level (green outlines) and characterized (shape, dimensions) using image analysis software. Francesco Primaticcio (Italian, 1504–1570), Laocoön and His Sons, 1542, H. 191 cm (Musée national du château de Fontainebleau, France, inv. MR 3290). See Castelle, Manon, Yvan Coquinot, and David Bourgarit. 2016. “Casting Cores of French Bronze Statues of the 16th and 17th Centuries: Identification of Regional Practices and Artistic Choices.” Microchemical Journal 126:121–31..