Through a comparison of citations from the Diatessaron, the Old Syriac versions (Sinaticus and Curetonian), the Peshitta, and the works of Aphrahat, Ephrem and the Doctrina Addai, Julius Bewer attempts to construct a history of the canon of the New Testament in the early Syriac tradition. Bewer begins by discussing the differences between the two Old Syriac recensions and then their relationship to the Peshitta. Bewer continues by attempting to discern which versions are cited in the works of Aphrahat, Ehprem and the Doctrina Addai. The work focuses on the Gospel texts, but Bewer also includes research on the rest of the New Testament documents as well.