has a cause against any clerks, you throw a slight upon their Bishops, and cause them to appear in your own court. If this be so, we expressly order you to presume to do so no more, because beyond doubt it is very unseemly. For if his own jurisdiction is not preserved to each Bishop, what else results but that the order of the Church is thrown into confusion by us, who ought to guard it."[131] Gieseler says: "They (the Roman Bishops) maintained, that not only the right of the highest ecclesiastical tribunal in the West belonged to them, but the supervision of orthodoxy, and maintenance of the Church's laws, in the whole Church; and they based these claims, still, it is true, at times, upon imperial edicts, and decrees of Councils, but most commonly upon the privileges granted to Peter by the Lord."[132] And I suppose if the Primacy of Christendom has any real meaning, it must mean this, that in case of necessity, such as infraction of the Canons, an appeal may be made to it. So undoubtedly St. Gregory understood his own rights. What his ordinary jurisdiction was, Fleury thus tells us:--"The Popes ordained clergy only for the Roman (local) Church, but they gave Bishops to the greater part of the Churches of Italy."[133] "St. Gregory entered into this detail only for the Churches which specially depended on the Holy See, and for that reason were named suburbican; that is, those of the southern part of Italy, where he was sole Archbishop, those of Sicily, and the other islands, though they had Metropolitans. But it will not be found that he exercised the same immediate power in the provinces depending on Milan and Aquileia, nor in Spain and the Gauls. It is true that in the Gauls he had his vicar, who was the Bishop of Arles, as was likewise the Bishop of Thessalonica for Western Illyricum. The Pope further took care of the Churches of Africa, that Councils should be held there, and the Canons maintained; but we do not find that he exercised particular jurisdiction over any that belonged to the Eastern empire, that is to say, upon the four patriarchates of Alexandria, Antioch, Jerusalem, and Constantinople. He was in communion and interchange of letters with all these Patriarchs, without entering into the particular management of the Churches depending on them, except it were in some extraordinary case. The multitude of St. Gregory's letters gives us opportunity to remark all these distinctions, in order not to extend indifferently rights which he only exercised over certain Churches."[134]