have from him1 he follows the Milanese form almost exclusively, and he follows it in all essential points. In view of these facts there can be no doubt that in the fourth and the first half of the fifth century the Roman Church made extensive use in the Redditio of a symbol, and a symbol, too, identical with the one mentioned above, and allowed of absolutely no additions to it. Ambrose was certainly not the only one2 who expressly protested against any anti-heretical additions. He regarded it as