To this section belongs also the Fayum Gospel Fragment and the Logia published by Grenfell and Hunt.'
On the question of the relationship of the Synoptic Gospels, Holtzmann in his early work, Die synoptischen Evangelien, ihr Ursprung and geschichtlicher Charakter (1863), presents a view which has been widely accepted, maintaining the priority of Mark, deriving Matthew in its present form from Mark and from Matthew's earlier "collection of Sayings," the Logia of Papias, and Luke from Matthew and Mark in the form in which we have them.
It is only on this assumption that the use of the term Logia in the sense described above can be justified.
These two works, the Logia (or, as some prefer to call it, the Non-Marcan document common to Matthew and Luke) and the Mark-Gospel, were the prime factors in all the subsequent composition of Gospels.
On our hypothesis the Logia would have been a sort of Christian manual used with a similar object.