Yale, Beinecke Rare Book and Manuscript Library, MS 425, detail of f. 305v. The Fouquet Missal. Bourges, c.1470-1475. Luna, De Sphaera, 15th Century 1501 - From Jardin de Sante - Cubas De Jean The ouroboros is traditionally depicted as a serpent or dragon in the process of swallowing…