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Lot description
Jean-Baptiste Madou (1796-1877) 'Devils in the Cave Playing with an Anorthoscope', charcoal on paper, circa 1835. Charcoal on paper.Monogrammed lower right. (28 x 32 cm) Sketch/study for the unpreserved painting 'Devils in the Cave Playing with an Anorthoscope' by the Belgian painter Jean-Baptiste Madou, circa 1835. An anorthoscope is a device that demonstrates an optical illusion by converting images on rotating disks into a normal image. It was invented in 1829 by the Belgian physicist Joseph Plateau.