of Alexander Severus, called the Trophies of Marius. It derives this appellation from the marble trophies formerly placed in the two side niches, and thence transferred to the parapet of the flight of steps leading up to the Capitol. This splendidly decorated reservoir was the nymphæum of the Emperor Alexander Severus, and is represented on a coin. It was to the Aqua Julia what the Trevi Fountain was to the Aqua Virgo. A portion of the aqueduct which supplied the water is still standing. Just beyond are
THE TOMBS OF MÆCENAS AND HORACE.
The first consists of a sepulchre of rubble work in a circular form, now surmounted by a cottage; the second, near it, is a stable, with two columns in front. Horace was buried near Mæcenas. Suetonius tells us: "He was interred, and lies buried on the skirts of the Esquiline Hill, near the Tomb of Mæcenas."
These tombs were ruthlessly destroyed by the municipality in 1884. From the square the road leads to some remains of
THE BATHS OF GALLIENUS,
miscalled the Temple of Minerva Medica, from a statue of the goddess discovered here. It is a circular building, 80 feet in diameter, and its walls contain numerous niches for statues; it was surmounted by a lofty cupola, which fell in a short time ago. This building was no doubt the sudatorium of the baths of Gallienus, which stood in his gardens and occupied this ground. In the fragments of chambers adjoining, terra-cotta pipes for the supply of hot water may still be seen.
The road from here leads to
THE CHURCH OF S. BIBIANA,
built in commemoration of her martyrdom. At the early age of eighteen, during the prefecture of Apronianus, she was first scourged, and then stoned to death. The church contains eight antique columns, and frescoes from the saint's life by Cortona and Ciampelli. Her statue at the high altar is the work of Bernini, and is considered to be his masterpiece. The fête of S. Bibiana is the S. Swithin's day of the Romans, who have a saying that "if it rain on this day it will continue to do so for the next forty." We are not superstitious, but we cannot help wishing that the saint will smile upon us. The Church of S. Bibiana was built in the fifth century, on the site of the house where the virgin-martyr is believed to have lived. It was in a great measure rebuilt by Pope Urban VII., and is only open on the Friday after the fourth Sunday in Lent, and on the 2nd of December, the anniversary of the saint.
Passing by the church, the road leads us through the new quarter of the town. Passing the remains of a tower in the Agger, we turn to the right, and pass the railway station through another section of the new quarter. Behind the custom-house is a fine piece of the Agger and the Porta Viminalis. Beyond, the barracks occupy the site of