Dobuni, the Middle Angles that of the Coritani, and the South Angles
that of the Cateuchlani. So also the Icenian kingdom, with its old
boundaries, became that of the East Angles, and the Trinobantian that
of the East Saxons.

G. 8.--What the entire population of Britain may have numbered at the
Roman Conquest is, again, purely a matter of guess-work. But it may
well have been not very different in amount from what it was at the
Norman Conquest, when the entries in Domesday roughly show that the
whole of England (south of the Humber) was inhabited about as thickly
as the Lake District at the present day, and contained some two
million souls. The primary hills, and the secondary plateaux, where
now we find the richest corn lands of the whole country, were in
pre-Roman times covered with virgin forest. But in the river valleys
above the level of the floods were to be found stretches of good open
plough land, and the chalk downs supplied excellent grazing. Where
both were combined, as in the valleys of the Avon and Wily near
Salisbury, and that of the Frome near Dorchester, we have the ideal
site for a Celtic settlement. In such places we accordingly find the
most conspicuous traces of the prehistoric Briton; the round barrows
which mark the burial-places of his chiefs, and the vast earthworks
with which he crowned the most defensible _dun_, or height, in his
territory.

G. 9.--These fortified British _duns_ are to be seen all over England.
Sometimes they have become Roman or mediaeval towns, as at Old Sarum;
sometimes they are still centres of population, as at London, Lincoln,
and Exeter; and sometimes, as at Bath and Dorchester, they remain
still as left by their original constructors. For they were designed
to be usually untenanted; not places to dwell in, but camps of refuge,