This is not to say, of course, that the excursus in the second stage has been a loss and a defect.
Let us not at this moment go into an excursus to inquire who he was and who he was not.
In an excursus we shall deal with the language of the Picts.
On the relations between Edessa and Rome see the end of the Excursus.
That would involve an excursus on Irish topography, which ...