Times have changed since then. The Mausoleum of Augustus, once a fortress, has been an open air theatre in our time, and there the great Salvini and Ristori often acted in their early youth; it is a circus now. And in less violent contrast, but with change as great from what it was, the palace of the Colonna suggests no thought of defence nowadays, and the wide gates and courtyard recall rather the splendours of the Constable and of his wife, Maria Mancini, niece of Cardinal Mazarin, than the fiercer days when Castracane was Sciarra's guest on the other side of the church. The Basilica of the Apostles is said to have been built by Pelagius the First, who was made Pope in the year 555, and who dedicated it to Saint Philip and Saint James. Recent advances in the study of archæology make it seem more than probable that he adapted for the purpose a part of the ancient barracks of the Vigiles, of which the central portion appears almost to coincide with the present church, at a somewhat different angle; and in the same way it is likely that the remains of the north wing were rebuilt at a later period by the Colonna as a fortified palace. In those times men would not have neglected to utilize the massive substructures and walls. However that may be, the Colonna dwelt there at a very early date, and in eight hundred years or more have only removed their headquarters from one side of the church to the other. The latter has been changed and rebuilt, and altered again, like most of the great Roman sanctuaries, till it bears no resemblance to the original building. The present church is distinctly ugly, with the worst defects of the early eighteenth century; and that age was as deficient in cultivated taste as it was abhorrent of natural beauty. Some fragments of the original frescos that adorned the apse are now preserved in a hall behind the main Sacristy of Saint Peter's. Against the flat walls, under the inquisition of the crudest daylight, the fragments of Melozzo da Forli's masterpiece are masterpieces still; the angelic faces, imprisoned in a place not theirs, reflect the sadness of art's captivity; and the irretrievable destruction of an inimitable past excites the pity and resentment of thoughtful men. The attempt to outdo the works of the great has exhibited the contemptible imbecility of the little, and the coarse-grained vanity of Clement the Eleventh has parodied the poetry of art in the bombastic prose of a vulgar tongue. Pope Pelagius took for his church the pillars and marbles of Trajan's Forum, in the belief that his acts were acceptable to God; but Clement had no such excuse, and the edifice which was a monument of faith has given place to the temple of a monumental vanity. [Illustration: FORUM OF TRAJAN]