is mentioned in the Acta Martyrum as the Cemeterium Generosa. The inscriptions obtained from this spot refer chiefly to the year A.D. 90, but some fragments belonging to the years 38, 87, and 59 were also found.

These inscriptions are of great interest both archæologically, as containing authentic particulars about the worship of the Arval Brothers, and the places at Rome or elsewhere in which it was held, and also historically, since many of them give the titles of eminent persons, or fix the dates of consuls and other ministers of state, and enable us thereby to correct and compare the statements of Tacitus and Suetonius with those of Dion Cassius. Many points of mythology are also illustrated by the mention of the divinities whom the college worshipped in their ritual.

An instance of the value of these inscriptions in determining the relative accuracy of Dion and Suetonius is afforded by the inscription belonging to the year A.n. 39, which gives us some historical facts about the reign of Caius, a portion of Roman history rendered difficult and obscure by the loss of the central books of the Annals of Tacitus. Suetonius states that the title of Augusta was conferred on Antonia by Claudius, whereas Dion on the contrary attributes the conference of this title to Caius. The inscription decides the question in favour of the account of Dion Cassius. Again, the date of the recognition of Caius by the Senate is fixed by the same inscription as having occurred on the 18th of March, and not on the 16th as recorded by Tacitus and Suetonius, nor the 26th, as Dion Cassius states. Many other interesting corrections or elucidations of the Latin historians will be found in Henzen's learned treatises, or in his articles in the ‘Annali dell'Instituto' for 1867, and the 'Hermes' 1867. Besides the grove of the Arval College, which was an extensive wood, four buildings are mentioned in the Records-the Edes Deæ Diæ, the Cesareum, the Tetrastylon and the Circus.

With regard to the position of these, Pellegrini is of opinion that the Circus was situated on the ridge of the hill on the western side of the Vigna Ceccarelli, in which place some remains apparently belonging to a circus have been

The

found. Henzen leaves the site of the Circus undetermined, thinking that there is not sufficient evidence. Tetrastylon and the Cesareum were supposed by Mommsen to have been names of the same building, but Henzen thinks that they are mentioned as separate places in the same inscription. The college feasts and meetings were held in one or other of these, which must therefore have been large enough to contain, besides the dining hall, an assembly-room, as the Brothers are said to have met there and to have sat in rows of seats. The Cesareum was a quadrangular building, as the form of the inscriptions which were attached to its walls seems to show, since they could not have been placed on a round surface. The temple of the Dea Dia stood upon a hill, for the priests are described as ascending in order to perform the sacrifices, and descending afterwards. Yet there are no vestiges of a building upon the top of the hill. Henzen therefore concludes that the ruins of the round building, upon which the modern Casa rustica in the Ceccarelli vineyard is placed, must have belonged to this Ædes. It was not decorated with columns but with Corinthian pilasters, and the inscriptions were affixed to the interior until the year 81, when it became necessary from want of space to place them on the pedestals of the columns.1

Beyond the site of the Arval Chapel, the road passes by Porto. the relics of the papal palace of La Magliana, and then along a causeway six miles in length to Porto. The site of the ancient Portus Trajani on the right branch of the Tiber is now occupied by the town of Porto, mainly consisting of the cathedral, the Villa Pallavicini, and some farm buildings. The sea has here continuously receded for many centuries, and the river deposits of sand and marl have extended. Fiumicino at the present mouth of the river is two miles distant from Porto, and its site was entirely covered by the sea at the time when Claudius, and Trajan after him, constructed their new ports. The large marshy tract to the north of Porto marks the site of the port of Claudius. The hexagonal basin of Trajan lies between this marsh and the town of Porto.

1 Lanciani, 'Scavi nel Bosco Sacro,' Roma 1868.

Ruins at Torre Paterno.

It is not at all clear when the right arm of the Tiber, or rather the canal which now serves for communication between the sea and the Tiber proper, assumed its present shape. Inundations and occasional repairs and alterations have changed its course, and the constant retreat of the sea must have lengthened it considerably.

Nibby's opinion is that, besides the large harbour, Claudius constructed an inner basin between the harbour and the old course of the river. Into this basin he cut a canal from the bend of the river near modern Ostia, and thus allowed the superfluous waters of the Tiber to escape through the harbour, and at the same time gained a supply of water for his docks. The inscription found in 1837, and now placed by the roadside near the Villa Pallavicini, alludes to this canal. The words of this inscription seem to show that the primary object of the canal was to supply the port with water, and that the advantage of preventing inundations at Rome was only secondary. Trajan probably enlarged and reconstructed the inner basin of Claudius, and surrounded it with the massive quays and warehouses, the ruins of which still remain. This inner basin is referred to by Juvenal.

At the same time the canal was probably enlarged, and it is to this enlargement that Pliny alludes when he speaks of the canal formed by the most provident of all emperors.1

Passing from Ostia along the sea coast through the woods of Castel Fusano to Torre Paterno, we find the ruins of a large villa, which have been supposed by some to belong to Pliny's Laurentinum. But they are more probably the relics of an imperial villa mentioned by Herodian as the retreat to which Commodus withdrew, by the advice of his physicians, at the time of the great plague in Rome, in the year 187. The neighbourhood of Laurentum was recommended, says the historian, on account of its being cooler than Rome, and also because it was shaded with large woods of laurel and bay trees, the strong scent from which was supposed to counteract the influence of the deadly malaria which was devastating the capital. The present ruins at 2 Herodian i. 12, 2.

1 Plin. Ep. viii. 17.

Torre Paterno consist of brick walls in two styles, one of which Nibby refers to the age of Nero, and the other to the reign of Commodus or Severus. The central building, which contained the grand suite of rooms, is the only part where work of the first century, analogous to that of Nero's buildings at Rome, is to be seen; the rest, says Nibby, is composed of various courtyards in the style of the Antonine era, which have been altered and partly concealed by later modern edifices. On one side of the ruins are two large cisterns, supplied by an aqueduct which comes from the Tenimento la Santola. The brickwork of this is apparently contemporaneous with other works which we know to have belonged to the age of Commodus or Severus as having very thin bricks and a great quantity of mortar. Near these reservoirs is an enclosed space which was probably a courtyard or garden of a rectangular shape. On the north side it has some ruins in the mode of construction called opus mixtum of the fourth century; and on the east is the principal part of the villa built of large and thick triangular bricks, with thin layers of mortar beautifully laid, and evidently of an early date. On the west there is a large dining-hall looking towards the sea, like that described in Pliny's Laurentinum. Various other rooms and the foundations of a tower can be traced on the sites occupied by the modern guardhouse and the Chapel of S. Filippo.1

(E) TIBUR.

The Via Valeria or Tiburtina leading to Tivoli, the ancient Tibur, now leaves Rome at the Porta S. Lorenzo. Traces of the polygonal pavement of the old road can be seen at intervals along the modern road to Tivoli, especially between the eighth and ninth milestones, and here and there elsewhere. In the Basilica of S. Lorenzo, a mile from the gate, are many ancient fragments of architecture. The Ponte Mammolo, by which the Anio is crossed at three and a half miles from Rome, is modern and there are scarcely any relics of the old bridge. Here and there on the road are the naked cores of tombs, but nothing of any interest offers itself to an archæologist until 1 Nibby, Anal. ii. p. 205.

Tomb of the Plautian family.

the Aqua Albulæ are reached. Some few remains of an ancient building, which may have belonged to the Therma here, have been discovered. They are now built into the walls of a modern farmhouse. These ruins may have belonged to the Thermæ of Agrippa, which Augustus frequented.

The ancient quarries of travertine mentioned by Strabo, whence the stone of the Coliseum came, lie on the right of the road beyond the Solfatara, and the modern quarries on the left. The road then crosses the Anio over an ancient bridge still called the Ponte Lucano, from Marcus Plautius Lucanus, a Tiburtine magistrate, whose memory is preserved in an inscription discovered upon the ancient fourteenth milestone on this road.

The bridge was originally composed of three travertine arches, of which the one next to the left bank remains entire. The central arch has been restored with masonry of the sixth century, similar to that in the Ponte Nomentano and the Ponte Salario. The arch on the right bank was restored in the fifteenth century, and the whole bridge was repaired again about 1836. This bridge was broken down by Totila when he was encamped at Tibur, and Nibby thinks that he destroyed the middle arch, which was then restored by Narses.

Just on the other side of the bridge is the tomb of the gens Plautia, well known from numerous paintings and photographs. It is very similar to that of Cæcilia Metella on the Appian Road, and to the Mausoleum of Hadrian, in its main features. A cylindrical tower of travertine, based on square foundation, and capped with a cone, was the original design, but a medieval tower built upon the top now disfigures it.

Two inscriptions placed in a projecting front with Ionic pilasters record the names of M. Plautius Silvanus, consul with Augustus in the year B.C. 2, and his son Ti. Plautius Silvanus, prefect of the city in A.D. 73. A third inscription, which is now destroyed, commemorated a P. Plautius Pulcher. The longer inscription is given with notes in Wilmann's Inscr. Lat. No. 1145. The person whose memory it preserves was the pontifex who officiated at the re