The masonry work here is of a very early date, and the various Greek inscriptions on the loculi also bear witness to its great antiquity; Marucchi alludes to a reservoir of water in the principal gallery, and believes that the presence of water prevented the cemetery from being further extended. (2) _The Cemetery of S. Agnes_ is on the Via Nomentana, about a mile from the Porta Pia. S. Agnes has been from very early times a singularly loved figure among the heroines of the days of persecution. Jerome well voices this popular estimate “omnium gentium litteris atque linguis .... vita laudata est.” Her story is well known; how she refused to become the bride of the Proconsul’s son, alleging that she was already the bride of Christ. After some terrible experiences she was condemned to be burned as a Christian, but the fire was too tardy or insufficient, so the executioner stabbed her in the throat. The name “Agnes” is simply a Christian appellation which she assumed signifying her purity and chastity. The name of her family is unknown; it is, however, certain that she belonged to a wealthy, probably to a noble House. She was interred in a cemetery, the property of her parents “in prædiolo suo.” Her martyrdom took place in the course of the persecution of the Emperor Valerian, _circa_ A.D. 253-7. Portions of the catacomb which bears her name are of a yet older date than S. Agnes. Among other signs of great antiquity are the Greek inscriptions on various loculi. The cemetery, which has been explored with some care, consists of three stories, of different dates. It was, however, after the burying of the young martyr that the catacomb was developed and assumed considerable proportions, as many of the Christian congregation of Rome were desirous of depositing their loved dead in the immediate neighbourhood of the tomb of Agnes. The Emperor Constantine in the fourth century built the basilica known as S. Agnes over the tomb. There is an inscription on a small marble tablet at Naples, originally brought from Rome, which Armellini considers was originally on the loculus containing the body of the saint. The inscription is as follows: AGNE · SANC TISSIMA The basilica has been several times restored, but preserves with fair accuracy the original disposition of the Church of Constantine.