This ruin agrees exactly with the lower part of the Tomb of Porsena at Clusium, described by Pliny (xxxvi. 19). He says: "But as the fabulousness of the story connected with it quite exceeds all bounds, I shall employ the words given by M. Varro himself in his account of it. 'Porsena was buried,' says he, 'beneath the city of Clusium, in the spot where he had constructed a square monument, built of squared stones. Each side of this monument was 300 feet long and 50 feet high, and beneath the base, which was also square, was an inextricable labyrinth.... Above this square building there stood five pyramids--one at each corner and one in the middle--75 feet broad at the base and 150 feet in height,'" &c. The present ruin is 49 feet long on each side and 24 feet high, surmounted at the angles with four cones, and one larger, in the centre, 26 feet in diameter, in which the urn was found in the last century. ARICCIA. The ancient ascent to Ariccia was the Clivus Virbii, so called from Hippolytus, who, on being restored to life by Diana, took the name of Virbius. "But Trivia kept in secret shades alone Her care, Hippolytus, to fate unknown; And called him Virbius in the Egerian Grove, Where then he lived obscure, but safe from Jove." VIRGIL, _Æneid_, vii. 774. The ascent was a noted place for beggars, as recorded by Persius (Sat. vi. 55) and Juvenal (Sat. iv.). The village is three-quarters of a mile west from Albano, surrounded by beautiful woods. At its entrance is the Palazzo Chigi, built by Bernini, in the midst of a fine park; fee, half-franc. The ancient town lay lower down the hill, where some of its remains can still be traced. Horace (Lib. i. Sat. 5) tells us that for slow travellers it was the first halting-place from Rome. "Leaving imperial Rome, my course I steer To poor Ariccia and its moderate cheer." FRANCIS. In the vale, just under the town, was the TEMPLE OF DIANA ARICINA, which Vitruvius (iv. 7) says was circular. The story of this temple is given by several classic writers. "Hippolytus came into Italy and dedicated the Temple of Aricina Diana. In this place, even at present, those who are victors in a single contest have the office of priest to the goddess given to them as a reward. This contest, however, is not offered to any free person, but only to slaves who have fled from their masters" (Pausanias, ii. 27). In 1791 a relief representing the scene was found at the circular ruin, and is now at Palma in Majorca. The temple was near a little stream from a source under the second viaduct, known as the FOUNTAIN OF EGERIA, which supplies the lake. The nymph was overcome by the death of Numa, as Ovid tells us: "Other woes, however, did not avail to diminish Egeria's grief; and, lying down at the very foot of the mountain, she melted into tears, until the sister of Apollo (Diana), moved to compassion, made a cool fountain of her body, changed into perennial waters."