In the Florence gallery there is a most interesting series of portraits of painters by their own hands--a unique and unrivalled collection, begun by the Cardinal Leopold, the brother of Ferdinand II., and increased by the addition of the portraits from the collection of the Abbé Pazzi, purchased by the Grand Duke Leopold in 1765. Besides these paintings, there is a collection of more than 4,000 engraved gems and cameos, amongst which are many antique portraits. There are also about 100 antique portrait busts, of which the rarest and best preserved are Cicero, Marc Antony, Julius Cæsar, Augustus, Caligula, Galba, and Otho. As the visitor will observe, several of these are in our portrait gallery. The Naples collection, besides many fine works of antiquity of every kind, has contributed in the most important manner to the subject of antique portraiture. It contains the invaluable relics found at Herculaneum and Pompeii: and amongst these have, from time to time, appeared portrait busts, statues, and even pictures with names upon them, by which busts elsewhere have been recognised. There are in this Museum, about 200 portraits in marble and bronze, from which our collection has been enriched. * * * * * (_The portraits of Italians begin immediately behind the Statue of Rubens, in the great Transept, on the east side of the Nave._) ARTISTS AND MUSICIANS. 129. NICCOLA PISANO. _Sculptor and Architect._ [Born at Pisa, in Italy, 1205-7. Died at Sienna, in Italy, about 1290.] The early reviver of Sculpture in Italy; memorable for being the first Italian artist who quitted the dry, stiff, traditional forms which had long prevailed, and founded a school based upon Truth and Nature. His finest productions preceded those of Cimabue; and it was said of him that “he was the first to see the light and to follow it.” His great work is the marble pulpit, with bas-reliefs from Scripture, in the Baptistery at Pisa. [By Alessandro d’Este. Vasari mentions a Bust of him by his son Giovanni, from which this may have been taken.] 130. ANDREA DI CIONE, better known by his surname ORCAGNA or ORGAGNA. _Painter, Sculptor, Architect._ [14th century.] Precise time of his birth unknown; it appears that he died about 1370. Executed several works in his three vocations. The dignified grandeur and admirable grouping of the figures in his paintings were at a later period copied or adopted, even by Michael Angelo and Raffaelle. Orcagna was a good as well as a great man. His chief works still exist, though in a half-ruined state, in the Campo Santo at Pisa, and in the Strozzi Chapel, and the Or-San-Michele at Florence. [This Bust is by the Cav. Massimiliano Laboureur. There is, however, a mezzo-relievo, by his own hand, behind the altar in Or-San-Michele, at Florence, which contains his portrait. He is there represented as an Apostle, shaven, and wearing a hood.] 131. FILIPPO BRUNELLESCHI. _Sculptor and Architect._