X-radiograph(s) of "St. Catherine" 

Editor: This is an X-radiograph of "St. Catherine," by Bernardo Daddi. The ghostly image reveals layers beneath the surface. What does the composition tell us about the original painting's construction? Curator: Notice the distinct horizontal divisions. They indicate separate wooden panels, joined to create the support. The varying densities suggest different materials and techniques used in the underdrawing and paint application. The artist seems to have worked meticulously, building up forms through layered applications, doesn't it? Editor: Yes, I see how the X-ray unveils the artist's process. It's like a hidden map of creation. Curator: Indeed. By studying these structural elements, we gain deeper insight into Daddi's artistic methodology and the physical history of the artwork itself. Editor: Fascinating! I hadn't considered how much could be learned from an X-ray. Curator: It transforms our understanding from surface appearance to structural essence.