At the closing of the sessions the council wrote a letter to Pope Leo I, in which the Fathers informed him of what had been done; thanked him for the exposition of Christian Faith contained in his dogmatic epistle; spoke of his legates as having presided over them in his name; and asked for the ratification of the disciplinary matters enacted, particularly canon 28. This letter was handed to the papal legates, who departed for Rome soon after the last session of the council. Similar letters were written to Pope Leo in December by Emperor Marcian and Anatolius of Constantinople. In reply Pope Leo protested most energetically against canon xxviii and declared it null and void as being against the prerogatives of Bishops of Alexandria and Antioch, and against the decrees of the Council of Nicaea. Like protests were contained in the letters written 22 May, 452, to Emperor Marcian, Empress Pulcheria, and Anatolius of Constantinople. Otherwise the pope ratified the Acts of the Council of Chalcedon, but only inasmuch as they referred to matters of faith. This approval was contained in letters written 21 March, 453, to the bishops who took part in the council; hence the Council of Chalcedon, at least as to the first six sessions, became an ecumenical synod, and was considered as such by all Christians, both in the time of Poe Leo and after him.
