called erroneously by various authorities the House of Claudius Nero, of Livia, of Augustus. It was incorporated into the Imperial Palace by Tiberius, though for very many years it preserved its distinctive title. Josephus tells us that "Caligula was killed in a private narrow passage within the palace as he was going to the bath, having turned from the direct road along which his servants had gone. The passages also were narrow wherein the work was done, and crowded with Caius's attendants, whence it was that they went by other ways, and came to the house of Germanicus, which house adjoined to the palace." A crypto-portico still connects this house with the Palace of Caligula, another going off at right angles to the House of Augustus. We have here a good specimen of a Roman house. In the vestibulum are remains of the mosaic floor and frescoed walls. The atrium still shows the pattern of its pavement. The tricliniarium is ornamented with frescoes of arabesque work, animals and fountains, also with mosaic pavement. The tablinium, in three parallel halls, painted with beautiful arabesque groups; wreaths of flowers and fruit; a group of Galatea and Polyhymnia; another of Mercury, Io, and Argus; a view of a Roman house; a lady at her toilet, &c. Behind these is the peristylium, out of which open the bedrooms, bath, kitchen, &c. In the centre tablinium are some leaden pipes, found in the excavations, stamped with the names of Julia, Domitian, and Niger,--the daughter of Augustus, the emperor, and the insurgent. THE PALACES OF THE CÆSARS gradually incorporated the whole of the Palatine buildings; and when we speak of the Palace of the Cæesars, it is not meant that it was one, but different palaces, built by different emperors, called after them, and connected with those previously erected by crypto-porticoes. THE HOUSE OF AUGUSTUS (18). "He resided in a small house formerly belonging to Hortensius. This was destroyed by fire, and rebuilt by contributions of the public" (Suetonius). The palace was destroyed by fire, under Titus, A.D. 72; the ruins were filled in by Domitian in the second year of his reign, and upon the top he built his celebrated palace. The remains of the Palace of Augustus--not now accessible, being under the convent--were explored and partly excavated some years ago. From the PALACE OF DOMITIAN (17) we can descend into some of the small chambers, the vault of one being adorned with a fresco representing Victory. THE GELOTIANA (32), mentioned by Suetonius as the place from which Caligula viewed the games in the Circus Maximus, is supposed to have been a house occupied by the guard and servants of the palace. Its ruin consists of chambers at the base of the hill, under the convent. It was here that the skit of the Crucifixion, now in the Museum of the Collegio Romano, was found. (See page 160.) The walls are still covered with names, &c., scratched by the soldiers. THE HOUSE OF TIBERIUS (3).