The compiler of this work, however, seems to have used a regnal list of the Bernician kings, which differed considerably from most of those found in our early authorities.
He is not mentioned, however, after 655, so it is probable that Deira was incorporated in the Bernician kingdom not long afterwards.
Bernician series >>
(See Bernician, Tuedian and Avonian.) At an early period, owing to the immense commercial importance of the coal seams, it became the practice to distinguish a " productive " (flotzfiihrend, terrain houiller) and an "unproductive," barren (flotzleerer) Lower Carboniferous; these two groups correspond in North America to the " Carboniferous " and " Sub-Carboniferous " respectively, or, as they are now sometimes styled, the " Pennsylvanian " and " Mississippian."
The one weak point in his policy that can be detected is that he left in the hands of Malcolm the Bernician district of Lothian, which the Scot had conquered during the anarchy that followed the death of ~thelred.