apostolorum sub uno libro scripta sunt, etc." Irenaeus says (III. 14. 1): "Lucas non solum prosecutor sed et cooperarius fuit _Apostolorum_, maxime autem Pauli," and makes use of the book to prove the subordination of Paul to the twelve. In the celebrated passages, de praescr. 22, 23: adv. Marc. I. 20; IV. 2-5; V. 1-3, Tertullian made a still more extensive use of the Acts of the Apostles, as the Antimarcionite book in the canon. One can see here why it was admitted into that collection and used against Paul as the Apostle of the heretics. The fundamental thought of Tertullian is that no one who fails to recognise the Acts of the Apostles has any right to recognise Paul, and that to elevate him by himself into a position of authority is unhistorical and absolutely unfounded fanaticism. If the [Greek: didache ton dodeka apostolon] was needed as an authority in the earlier time, a _book_ which contained that authority was required in the later period; and nothing else could be found than the work of the so-called Luke. "Qui Acta Apostolorum non recipiunt, nec spiritus sancti esse possunt, qui necdum spiritum sanctum possunt agnoscere discentibus missum, sed nec ecclesiam se dicant defendere qui quando et quibus incunabulis institutum est hoc corpus probare non habent." But the greater part of the heretics remained obstinate. Neither Marcionites, Severians, nor the later Manicheans recognised the Acts of the Apostles. To some extent they replied by setting up other histories of Apostles in opposition to it, as was done later by a fraction of the Ebionites and even by the Marcionites. But the Church also was firm. It is perhaps the most striking phenomenon in the history of the formation of the canon that this late book, from the very moment of its appearance, asserts its right to a place in the collection, just as certainly as the four Gospels, though its position varied. In Clement of Alexandria indeed the book is still pretty much in the background, perhaps on a level with the [Greek: kerugma Petrou], but Clement has no New Testament at all in the strict sense of the word; see below. But at the very beginning the book stood where it is to-day, i.e., immediately after the Gospels (see Muratorian Fragment, Irenaeus, etc.). The parallel creation, the group of Catholic Epistles, acquired a much more dubious position than the Acts of the Apostles, and its place was never really settled. Its germ is probably to be found in two Epistles of John (viz., 1st and 3rd) which acquired dignity along with the Gospel, as well as in the Epistle of Jude. These may have given the impulse to create a group of narratives about the twelve Apostles from anonymous writings of old Apostles, prophets, and teachers. But the Epistle of Peter is still wanting in the Muratorian Fragment, nor do we yet find the group there associated with the Acts of the Apostles. The Epistle of Jude, two Epistles of John, the