Fig. 4
From: “Foundations of a great metaphysical style”: unraveling Giorgio de Chirico’s early palette
taken from de Chirico paintings. A Metaphysical Composition with Toys (1914); B The Friend's Unrest or The Astronomer (1915); C Metaphysical Interior with Biscuits (1916); D Metaphysical Composition [Symbols of War] (c. 1916); E Hector and Andromache (dated 1918, painted ca. 1944–45); F Melancholia (dated 1916, painted c. 1944–45)
Visible light and SEM electron backscatter images of cross section samples