Engraving on fossil stone by Joseph Kosuth (Toledo, Ohio, 1945), 2004, from an edition of 81. A founder of Conceptual Art and author of the canonical "One and Three Chairs" (1965), Kosuth has built a fifty-year practice on language: definitions, quotations and philosophical fragments presented as the work itself rather than as a description of it. Here passages of Spanish text are incised over the fossilized shells embedded in a slab of Mesozoic limestone, so that two incompatible time scales — geological duration and the history of ideas — are forced to share one surface. The title's pairing of a map with a discipline is characteristic of his taste for categories that refuse to align. Because of the nature of the support, each copy differs and the photographs are indicative only. Dimensions: 50 x 70 x 2 cm. A conceptually rigorous piece by a genuinely historic artist.