The case seems otherwise as regards the northern end of the line, for the Petrion, mentioned in the _Paschal Chronicle_, was, strictly speaking, the district in which the Greek Patriarchate is now situated, the name of the district being still retained by the gate (Petri Kapoussi) at the eastern end of the enclosure around the Patriarchal Church and residence. But this would bring the northern end of the land wall considerably more to the west than the point where we have reason to believe the Church of St. Antony was found. It would also make the city broader than the _Notitia_ allows. The discrepancy can, however, be easily removed. For, while the Petrion was pre-eminently the district above indicated, the designation was applied also to territory much further to the east. The Church of St. Laurentius, for example, near which St. Antony’s stood, is at one time described as standing in the Plateia,[100] the plain to the east of Petri Kapoussi, while at another time it is spoken of as in the Petrion.[101] Hence the statement of the _Paschal Chronicle_ does not conflict with what other authorities affirm respecting the point at which the Constantinian land fortifications reached the Golden Horn. (_k_) Finally, from the Church of St. Antony the wall proceeded along the shore of the Golden Horn to the head of the promontory, thus completing the circuit of the fortifications. It should, however, be noted that this work of surrounding the city with bulwarks was not executed entirely in the reign of Constantine. A portion of the undertaking—probably the walls defending the shores of the city—was left for his son and successor Constantius to complete.[102] The following gates, mentioned in Byzantine history, were found, there is reason to believe, in the Constantinian circuit:— Porta Polyandriou (Πόρτα Πολυανδρίου,[103] the Gate of the Cemetery) stood in the portion of the wall near the Church of the Holy Apostles. It is true that this was one of the names of the Gate of Adrianople in the later Theodosian Walls, but if the name was derived from the Imperial Cemetery beside the Church of the Holy Apostles, there is much probability in Dr. Mordtmann’s opinion that the designation belonged originally to the corresponding gate in the Constantinian fortifications, which stood closer to the cemetery.[104]