Fig. 2

Contents and structure of the nine codices transmitting Mappæ Clavicula and the Compositiones lucenses traditions. α Family—S Sélestat, Bibliothèque Humaniste, 17, tenth century. Od Oxford, Bodleian Library, Digby 162, thirteenth century. L London, British Library, Add. 41486, thirteenth century. C Corning, Museum of Glass, Phillipps 3715, twelfth century. Ob Oxford, Bodleian Library, Bodley 679, thirteenth century. Om Oxford, Magdalen College, 173, fourteenth century; β Family—M Madrid, Biblioteca Nacional, 19, twelfth century. P Paris, Bibliothèque National de France, lat. 7418, fourteenth century. Fp Firenze, Biblioteca Nazionale Centrale, Pal. 951, fifteenth century. Green Compositiones Lucenses tradition. Red Mappæ Clavicula. Red and grey fragmentary tradition of the Mappæ Clavicula. Grey other unrelated texts