Geographical and other treatisesDati, Leonardo, 1408-1472[1423 - 1500]itaManuscript on paper containing Leonardo Dati O.P. (1360-1425), or Gregorio Dati (1362-1435), La Sfera; a Libro di ricordi (1480-1501); sermons; extracts from Brunetto Latini, Il Tesoro; magical treatise; a "Portolano"; three sonnets; and 10 maps or views in watercolor and 18 colored circular diagramsIn Italian.Script: Art. 1 in Gothica Cursiva Libraria; art. 2, in two hands, same script as art. 1; artt. 3-9, one hand, writing in Gothica Cursiva Currens (Mercantesca)Decoration: only from f. 25r onwards: red stroking of majuscules; illustrations (watercolor diagrams and maps) to art. 6 include: sky scenes (stars; sun illuminating the earth; eclipse of the moon); maps of the earth (diagram with the equator; earth among the other elements; the horizon; the four regions, or plagae; directions of the winds); Ptolemaic system; T-O map; seas and geographic regions (unidentified sea; Black Sea and Caspian Sea; Tyrrhenian Sea; Dardanelles; Sea of Azov and Don; coast of North Africa; Mesopotamia, Arabia, Palestine; Tower of Babel; view of Tunis; western coast of Asia Minor, with burning Troy)