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Peter Paul Rubens, Descent from the Cross (Central Panel), 1612-14

The Courtauld, London (Samuel Courtauld Trust). The painting exemplifies the use of a priming technique used by Dutch painters that mixed lead white with chalk. (Coremans P, Thissen J. Composition et structure des couches originales [Descente de Croix de Rubens]. Bulletin de l'lnstitut Royal du Patrimoine Artistique 1962;5:119-27. Gettens RJ, Kühn H, Chase WT. Lead white. In: Roy A, editor. Artists' Pigments: A Handbook of Their History and Characteristics. Vol. 2. Washington, DC: National Gallery of Art. London:Archetype, 1993:67-82.) (Source: Onze-Lieve-Vrouwekathedraal [Cathedral of Our Lady in Antwerp]. Public domain.)