At No. 9 Piazza Trinità dei Monti, Poussin lived; and Zuccari lived at 64 Via Sistina, close by. Beyond, the Via Cappo la Casa runs out to the right: adjoining the Church of S. Giuseppe is the New Museum of Industrial Art. Open every day from 9 till 3; fee, 50 centesimi. _By the Via Sistina we reach the_ PIAZZA BARBERINI. It has in the centre a beautiful fountain, by Bernini, with four dolphins supporting a shell, in which is a Triton; it throws water to a great height. _Proceeding up the Via delle Quattro Fontane, on the left is the_ BARBERINI GALLERY. (_Palazzo Barberini._) _Open every day from 12 till 4. Catalogues are lent for the use of visitors._ It contains paintings by the first masters. The statue to Thorwaldsen, in the garden, was lately erected by Mr. Wolff, Thorwaldsen's pupil. The library is open from 9 till 2 on Thursdays. FIRST ROOM.--Fresco on vault, Triumph of Glory, by Cortona; 16. Joseph and Potiphar's Wife, by Beliverti; 21. S. Cecilia, by Lanfranco. SECOND ROOM.--48. Madonna, by Francia; 63. His Daughter, by Raphael Mengs; 74. Adam and Eve, by Domenichino. THIRD ROOM.--73. The Slave, by Palma Vecchio; 81. Portrait, called the Stepmother of Beatrice Cenci (?) by Caravaggio; 82. The Fornarina, by Raphael; 83. Lucrezia Cenci, the mother of Beatrice Cenci (?), by Scipione Gaetani; 85. The so-called Beatrice Cenci, by Guido. This is nothing more or less than Guido's model, and the same face can be seen in the Aurora, and in the fresco at S. Gregory's. It could not possibly be Beatrice, for Guido did not come to Rome till sixteen years after her death. 86. Death of Germanicus, by Poussin; 90. Holy Family, by Sarto. The inscription on the right side of the palace records the campaign of Claudius in Britain. _Proceeding up the_ QUATTRO FONTANE, at the top of the hill are four river gods acting as fountains. The church at the left corner of Via del Quirinale is S. Carlo, its space being equal to the area of one of the piers which supports the dome of S. Peter's. _Turning down this street_, the church on the left is S. ANDREW'S, on the site of the Temple of Quirinus (Romulus). It contains the tomb of Emanuele IV. of Sardinia, who abdicated in 1802, and died a monk in 1818. The church is a little gem. _At the end of the street is the square_ MONTE CAVALLO. In the centre is a fountain, with granite basin 26 feet in diameter, which formerly stood in the Forum; also two beautiful colossal horse-tamers in marble, supposed to be Castor and Pollux by some, by others, Alexander and Bucephalus. The Latin inscriptions state one of these colossi to be the work of Phidias, the other of Praxiteles. Both were presented to Nero by Tiridates, king of Armenia. They once ornamented the Baths of Constantine, and have never been buried. The whole is surmounted by an Egyptian obelisk found near the Mausoleum of Augustus. _On the left_ is the king's QUIRINAL PALACE.