Their next office was, to preside over the provincial bishops, and, if any controversies arose among them, to interpose their authority to end and decide them: also to hear the accusations of others, who complained of injury done to them by their own bishops, from whom there was always liberty of appeal to the metropolitan. But still there lay an appeal from the metropolitan to a provincial synod, of which he was only the president or moderator.
A third office of the metropolitans or primates was, to call provincial synods, and preside in them. To this end, their circular letters, called Synodicæ and Tractoriæ, were a legal summons, which no bishop of the province might disobey under pain of suspension, or other canonical censure, at the discretion of the metropolitan and council.
Fourthly, it belonged to the primates to publish and disperse such imperial laws and canons, as were made either by the emperors or the councils, for the common good of the Church. This gave them a right to visit, and inquire into neglects, abuses, and disorders, committed by any bishop throughout the whole province.
Fifthly, bishops, when they travelled into foreign countries on extraordinary occasions, used to consult the primate, and take his Formatæ, or letters of commendation. This was particularly required of the African bishops by the third Council of Carthage.
A sixth branch of the metropolitan office was, to take care of all vacant sees within their province, by administering the affairs of the Church, securing the revenues of the bishopric, and procuring a speedy election of a new bishop.
Seventhly, it belonged to the metropolitans, yearly to review the calculation of the time of Easter, and give notice to their suffragans of it. The care of composing the cycle was, indeed, by the Nicene fathers particularly committed to the bishop of Alexandria. But due care not being always taken in this matter, the metropolitan in every province was concerned to settle the time, and acquaint the whole province with it.
The primate of Alexandria was the greatest metropolitan in the world, both for the absoluteness of his power, and the extent of his jurisdiction. For he was not metropolitan of a single province, but of all the provinces of Egypt, Libya, and Pentapolis, in which there were at least six large provinces, out of which above an hundred bishops were called to a provincial synod.
Besides an actual primacy of power, there was likewise a primacy of honour; that is, some bishops had the name and title of primates, but not the jurisdiction. Of these there were three sorts. First, the senior bishops in each province, next to the metropolitan. These primates had no power above others, except when the metropolitans were some way disabled, or disqualified for discharging their office, by irregularity or suspension. In this case, their power devolved on the senior bishop of the province.
The second sort of honorary primates were the titular metropolitans, or bishops of such cities as had the name and title of metropolis bestowed on them by some emperor, without the privileges, which were still continued to the ancient metropolis of the province. Of this sort were the cities of Chalcedon and Nice.
Thirdly, some bishops were honoured with the title of primates, in regard to the eminency of their see, being some mother-church, or particularly honoured by ancient prescription. This was the case of the bishop of Jerusalem, in consideration of its being the mother-church of the Christian world.