With the intention of returning to Rome for the ceremonies of the holy week, I have merely passed through on my way to Naples. We left it the morning after our arrival, going by the "Appian way" to mount Albano, which borders the Campagna on the south, at a distance of fifteen miles. This celebrated road is lined with the ruined tombs of the Romans. Off at the right, some four or five miles from the city, rises the fortress-like _tomb of Cecilia Metella_, so exquisitely mused upon by Childe Harold. This, says Sismondi, with the tombs of Adrian and Augustus, became fortresses of banditti, in the thirteenth century, and were taken by Brancallone, the Bolognese governor of Rome, who hanged the marauders from the walls. It looks little like "a woman's grave." We changed horses at the pretty village of Albano, and, on leaving it, passed an ancient mausoleum, believed to be the tomb of the Curiatii who fought the Horatii on this spot. It is a large structure, and had originally four pyramids on the corners, two of which only remain. A mile from Albano lies Aricia, in a country of the loveliest rural beauty. Here was the famous temple of Diana, and here were the lake and grove sacred to the "virgin huntress," and consecrated as her home by peculiar worship. The fountain of Egeria is here, where Numa communed with the nymph, and the lake of Nemi, on the borders of which the temple stood, and which was called _Diana's mirror_ (_speculum Dianæ_), is at this day, perhaps, one of the sweetest gems of natural scenery in the world. We slept at Velletri, a pretty town of some twelve thousand inhabitants, which stands on a hill-side, leaning down to the Pontine marshes. It was one of the grand days of carnival, and the streets were full of masks, walking up and down in their ridiculous dresses, and committing every sort of foolery. The next morning, by daylight, we were upon the Pontine marshes, the long thirty miles level of which we passed in an unbroken trot, one part of a day's journey of seventy-five miles, done by the _same horses_, at the rate of six miles in the hour! They are small, compact animals, and look in good condition, though they do as much habitually.