Ugolino da Siena should be referred to this era; he died decrepid in 1339, and consequently might have been born before 1260. We cannot agree with Vasari, who insinuates that he was the scholar of Cimabue; nor with Baldinucci, who ingrafts him on his _Tree_; nor yet with others who assert that he was the pupil of Guido; for the latter must have been dead when Ugolino was very young. That he was educated in Siena, seems to me highly probable, from the number of masters then in that city, and because the colouring of his Madonna of Orsanmichele at Florence is in the style of the old school of Siena; less strong and less true than that of Cimabue and the Florentines. This fact appears to me of importance, for it depends on the mechanism of the art, which was different in different schools. Design at that early period savoured more or less of the Greeks; and in this respect Ugolino adhered to them too closely. "He painted pictures and chapels over all Italy," says Vasari; and if I am not mistaken he came to Florence after his travels, and at length died at Siena. Duccio di Boninsegna is another master of this age, of whom I shall speak in another place, as the inventor of a new species of painting. Tizio says he was the pupil of Segna, an artist now almost unknown in Siena. He must, however, have enjoyed great celebrity in his day among his countrymen; for Tizio informs us that he painted a picture at Arezzo, containing a figure which he pronounces excellent and highly esteemed. He has transmitted to us the following remarkable testimony concerning Duccio: "_Ducius_ Senensis inter ejusdem opificii artifices eâ tempestate primarius; ex cujus officinâ veluti ex equo Trojano pictores egregii prodierunt."