THE ARA DITIS ET PROSERPINÆ. On the 20th of September, 1890, the workmen employed in the construction of the main sewer on the left bank of the Tiber, between the Ponte S. Angelo and the church of S. Giovanni dei Fiorentini, found a mediæval wall, built of materials collected at random from the neighboring ruins. Among them were fragments of one or more inscriptions which described the celebrations of the _Ludi Sæculares_ under the Empire. By the end of the day, seventeen pieces had been recovered, seven of which belonged to the records of the games celebrated under Augustus, in the year 17 B. C., the others to those celebrated under Septimius Severus and Caracalla, in the year 204 A. D. Later researches led to the discovery of ninety-six other fragments, making a total of one hundred and thirteen, of which eight are of the time of Augustus, two of the time of Domitian, and the rest date from Severus. [Illustration: Pillar commemorating the _Ludi Sæculares_.] The fragments of the year 17 B. C., fitted together, make a block three metres high, containing one hundred and sixty-eight minutely inscribed lines. This monument, now exhibited in the Baths of Diocletian, was in the form of a square pillar enclosed by a projecting frame, with base and capital of the Tuscan order, and it measured, when entire, four metres in height. I believe that there is no inscription among the thirty thousand collected in volume vi. of the "Corpus" which makes a more profound impression on the mind, or appeals more to the imagination than this official report of a state ceremony which took place over nineteen hundred years ago, and was attended by the most illustrious men of the age.