[Illustration: Picture of Orpheus found in the Catacombs of Priscilla.]
In accepting rites and customs which were not offensive to her principles and morality, the Church showed equal tact and foresight, and contributed to the peaceful accomplishment of the transformation. These rites and customs, borrowed from classical times, are nowhere so conspicuous as in Rome. Giovanni Marangoni, a scholar of the last century, wrote a book on this subject which is full of valuable information.[16] The subject is so comprehensive, and in a certain sense so well known, that I must satisfy myself by mentioning only a few particulars connected with recent discoveries. First, as to symbolic images allowed in churches and cemeteries. Of Orpheus playing on the lyre, while watching his flock, as a substitute for the Good Shepherd, there have been found in the catacombs four paintings, two reliefs on sarcophagi, one engraving on a gem. Here is the latest representation discovered, from the Catacombs of Priscilla (1888).
[Illustration: The Four Seasons, from the Imperial Palace, Ostia.]
The belief that the sibyls had prophesied the advent of Christ made their images popular. The church of the Aracœli is particularly associated with them, because tradition refers the origin of its name to an altar--ARA PRIMOGENITI DEI--raised to the son of God by the emperor Augustus, who had been warned of his advent by the sibylline books. For this reason the figures of Augustus and of the Tiburtine sibyl are painted on either side of the arch above the high altar. They have actually been given the place of honor in this church; and formerly, when at Christmas time the _Presepio_ was exhibited in the second chapel on the left, they occupied the front row, the sibyl pointing out to Augustus the Virgin and the Bambino who appeared in the sky in a halo of light. The two figures, carved in wood, have now disappeared; they were given away or sold thirty years ago, when a new set of images was offered to the _Presepio_ by prince Alexander Torlonia. Prophets and sibyls appear also in Renaissance monuments; they were modelled by della Porta in the Santa Casa at Loretto, painted by Michelangelo in the Sistine chapel, by Raphael in S. Maria della Pace, by Pinturicchio in the Borgia apartments, engraved by Baccio Baldini, a contemporary of Sandro Botticelli, and "graffite" by Matteo di Giovanni in the pavement of the Duomo at Siena.