and then moves on to another Dionysus-related metamorphosis story. The rest of the canto is concerned with Venice, which is portrayed as a stone forest growing out of the water. Cantos XVIII and XIX return to the theme of financial exploitation, beginning with the Venetian explorer Marco Polo's account of Kublai Khan's paper money. Canto XIX deals mainly with those who profit from war, returning briefly to the Russian Revolution, and ends on the stupidity of wars and those who promote them. Canto XX opens with a grouping of phrases, words and images from Mediterranean poetry, ranging from Homer through Ovid, Propertius and Catullus to the Song of Roland and Arnaut Daniel. These fragments constellate to form an exemplum of what Pound calls "clear song". There follows another exemplum, this time of the linguistic scholarship that enables us to read these old poetries and the specific attention to words this study requires. Finally, this "clear song" and intellectual activity is implicitly contrasted with the inertia and indolence of the lotus eaters, whose song completes the canto. There are references to the Malatesta family and to Borso d'Este, who tried to keep the peace between the warring Italian city states. Canto XXI deals with the machinations of the Medici bank, especially with the Medici's effect on Venice. These are contrasted with the actions of Thomas Jefferson, who is shown as a cultured leader with an interest in the arts. A phrase from one of Sigismondo Pandolfo's letters inserted into the Jefferson passage draws an explicit parallel between the two men, a theme that is to recur later in the poem. The next canto continues the focus on finance by introducing the Social Credit theories of C.H. Douglas for the first time. Canto XXIII returns to the world of the troubadours via Homer and Renaissance neo-platonism. Pound saw Provençal culture as a nexus of survival of the old pagan beliefs, and the destruction of the Cathar stronghold at Montsegur at the end of the Albigensian Crusade is held up as an example of the tendency of authority to crush all such alternative cultures. The destruction of Mont Segur is implicitly compared with the destruction of Troy in the closing lines of the canto. Canto XXIV then returns to 15th-century Italy and the d'Este family, again focusing on their Venetian activities and Niccolo d'Este's voyage to the Holy Land. Cantos XXV and XXVI