MADRID.- The exhibition is organized into three sections. The first, Bibliotheca artis (Library of Art), is the most important, featuring major works from the European literature on art, starting with the great treatises of the Italian Renaissance. On display are first editions of the key texts on painting by Leon Battista Alberti (1547) and Leonardo da Vinci (1651), as well as the first systematic treatise on perspective by Daniele Barbaro, who is the subject of a portrait by Titian in the Museum’s collection. The dissemination of Renaissance ideas in northern Europe is best represented by Dürer’s theoretical writings, of which an example here is the first Latin edition of his treatise On Measurement (1532). Also included in this section is a copy of the founding text of art history, Vasari’s Lives, a work that exercised a notable influence in Italy and the rest of Europe. Art theory during the Spanish Golden Age represents is another important section within the