³ The Magnae Derivationes of Uguccione has been called "Dante's Dictionary" for more than a century. See P. Toynbee "Dante's Obligation to the Magnae Derivationes of Uguccione da Pisa", Romania, XXVI (1897), 533-544. Later also in his Dante Studies and Researches, London 1902, 97-114.