We may say entirely, for the additions are so insignificant--some thirty words in all, and those for the most part supported by other authority--that for practical purposes they need not be reckoned.
With the exception of these thirty words inserted, and some, also slight, alterations of phrase, Marcion's Gospel presents simply an _abridgment_ of our St.Luke.
Does not this almost at once exclude the idea that they can be independent works?
If it does not, then let us compare the two in detail.

There is some disturbance and re-arrangement in the first chapter of Marcion's Gospel, though the substance is that of the third Synoptic; but from this point onwards the two move step by step together but for the omissions and a single transposition (iv.

27 to xvii.

18).

Out of fifty-three sections peculiar to St.
Luke--from iv.