Tatian devotes a number of chapters to this subject (XXXI., XXXV.–XLI). Eusebius mentions him, with Clement, Africanus, Josephus, and Justus, in the preface to his Chron. (Schöne, II. p. 4), as a witness to the antiquity of Moses, and it is probable that Julius Africanus drew from him in the composition of his chronological work (cf. Harnack, ibid. p. 224). Clement of Alexandria likewise made large use of his chronological results (see especially his Strom. I. 21), and Origen refers to them in his Contra Cels. I. 16. It was largely on account of these chapters on the antiquity of Moses that Tatian’s Oratio was held in such high esteem, while his other works disappeared.