Again, in Luke iii.

22 the reading [Greek: ego saemeron gegennaeka se] for [Greek: en soi eudokaesa] is shared with Justin by the most important Graeco- Latin MS.

D (Codex Bezae), and a, b, c, ff, l of the Old Version; Augustine expressly states that the reading was found 'in several respectable copies (aliquibus fide dignis exemplaribus), though not in the older Greek Codices.' There will then remain the specifying of Arabia as the home of the Magi, the phrase [Greek: kathezomenos] used of John on the banks of the Jordan, the two unparallelled sentences, and the cave of the Nativity.

Of these the phrase [Greek: kathezomenos], which occurs in three places, Dial.

49, 51, 88, but always in Justin's own narrative and not in quotation, _may_ be an accidental recurrence; and it is not impossible that the other items may be derived from an unwritten tradition.
Still, on the whole, I incline to think that though there is not conclusive proof that Justin used a lost Gospel besides the present Canonical Gospels, it is the more probable hypothesis of the two that he did.