SS. Sergius and Bacchus (Kutchuk Aya Sofia) and S. Sophia still reflect the splendour of the spacious days of Justinian the Great; days in which men still dreamed of the restoration of the Roman Empire to its ancient bounds; days in which the justice which Rome had developed was codified and enthroned to be the eternal rule of all nations that seek to establish righteousness between man and man. The former sanctuary was built by Justinian, probably in 527, as a thank-offering to the martyrs to whom the church was dedicated, for having saved him from the death to which he had been sentenced, on account of his implication in a plot against the Emperor Anastasius. No wonder that, when the lustre of the imperial diadem shed light upon the full meaning of his deliverance, his saviours became the objects of his special gratitude and veneration. The erection of the church was one of the first acts of his reign; he placed it in the immediate vicinity of his residence while heir-apparent, and at the gates of his palace when Emperor; to it he attached a large monastery, endowed with his private fortune. There cleaves therefore to the building the personal interest that belongs to anything done in a man’s most earnest mood. Among the historical associations that gather around the edifice is the fact that it was the church assigned to the Papal Legates at the Court of Constantinople, for the celebration of Divine service in the Latin form. Originally, indeed, that distinction belonged to the basilica of SS. Peter and Paul which stood beside SS. Sergius and Bacchus. The special regard cherished for the two great apostles in the West would naturally make a church dedicated to them in Constantinople the most acceptable religious home for the Roman clergy on a visit to the city. But the basilica of SS. Peter and Paul soon disappeared, under circumstances of which we have no record, and then SS. Sergius and Bacchus, virtually a part of it, was placed at the disposal of Latin priests. This fraternal custom was often interrupted by the quarrels which, from time to time, rent Eastern and Western Christendom even before their final separation, but it was restored whenever the two parties were reconciled. Pope John VIII., for instance, thanks Basil I. (867-886) for granting the use of the church again to the Roman See, in conformity with ancient rights. Among the Papal representatives in Constantinople was Pope Gregory the Great (590-614), while still a deacon, and at a time when the ecclesiastical rivalry between the Sees of Old Rome and New Rome was keen. It must have been with something of the feeling that sprang from personal acquaintance with scenes and men in the rival metropolis that he protested, when Pontiff, against the assumption of the title “œcumenical bishop” by the Patriarch John the Faster in 587, and that he adopted in contra-distinction the well-known style of the Popes “the servant of the