SIXTH ROOM.--Cartoons of Volterra; Annunciation, by Arpino; Christ and the Tribute Money, by Caravaggio; the Supper at Emmaus, by Caravaggio; copy of Guercino's Assumption, original in Russia; copy of Domenichino's S. Andrew; "The First Gentleman in Europe," by Lawrence; S. Thomas, by Cammuccini; a Head, by Vandyck. SEVENTH ROOM.--Cartoons of Maratta's, for S. Peter's dome; a Greek Baptism, by Nocchi, 1840. The last room contains plaster casts of ancient statues. _On the left coming out of the Museum is the back entrance to the Church of S. John. Enter here, and pass out to the front._ The bronze statue on the left of the back portico is that of Henry of Navarre. S. GIOVANNI IN LATERANO. "The mother and head of the churches of the city and of the world." This church was founded by Constantine, and took the name of _Lateran_ from its occupying the site of the Palace of Plautus Lateranus, the senator, who suffered under Nero. After having existed for ten centuries, it was almost entirely destroyed by fire in 1308. It was rebuilt by Clement V., and embellished by other popes. Clement XII. had the façade executed from the design of Galilei. It is of travertine, with four large columns and six pilasters of the Composite order, which support a cornice surmounted by a balustrade, on which are placed colossal statues of Jesus and several saints. Between the columns and the pilasters there are five balconies; that in the middle was used for the papal benedictions. Beneath the balconies are as many entrances, which lead into the magnificent covered portico (_loggiato_), decorated with twenty-four pilasters of the Composite order. In this portico is placed the colossal statue of Constantine found in his baths. Notice the beautiful bronze doors which came from the Senate House in the Forum. _The interior_ is divided into a nave and two aisles by four ranges of pilasters. The architect was Borromini, who covered the ancient columns which divide the middle aisles from the side ones with pilasters, forming five arches, corresponding to an equal number of chapels. Each of these pilasters is decorated, on the side of the middle aisle, by two fluted pilasters, supporting a cornice which goes round the church. Between these there are twelve niches, each ornamented by two columns of verd-antique, containing the statues of the apostles. The Corsini chapel, _first chapel on left of front entry_, is one of the richest in Rome. It was executed by Clement XII. from the design of Galilei, in honour of S. Andrew Corsini. The porphyry sarcophagus of Clement XII. was brought from the portico of the Pantheon, and is supposed to have contained the remains of Agrippa. The subterranean chapel contains the remains of the Corsini family. On the altar is the beautiful statue "Piety," said to be by Bernini or Montanti.