14 THE NUBIANS, THE NUBA l. 2. v.
V As regards the Barabra as a whole one thing is quite certain:
there are no grounds for closely connecting them as a race with the
Nuba of southern Kordofan as Riippell, Rossi and Keane did^. They
are very similar in type to the Middle Nubians who lived between
3000 and 4000 years ago in the same locality, but these had no more
racial affinity with the southern Nuba than the Barabra-Danagla
have, and the latter are almost the complete antithesis of the southern Nuba both physically and culturally^.
It may be the case, and probably is, that the southern Nuba are
to some extent the modern representatives of the race of negroes who temporarily held Dongola and the cataract country south of
Haifa in the days of the Middle Kingdom and early Empire and whose congeners, no doubt at a later date, formed part of the forces
of the Ethiopian dynasty that conquered Egypt and ruled it for something less than a century, but these negroes were aliens in the
northern Sudan and most of them were forced back to the south, and their place in Lower Nubia was taken by its original inhabitants and settlers from Egypt.
In the Dodekaschoinos^ it is probable that the negroes had hardly
displaced the original inhabitants, but south of Haifa they must have done so temporarily and to some extent modified the racial type in
the process. But, even so, allowing for periods of interruption, it is
true to say that from the time of the Middle Empire (2000-1600 B.C.) and onwards for centuries, and throughout the Meroitic, Ptolemaic and classical periods, and again in the years preceding the decisive Arab conquest of the Sudan, a strong infiltration of the Egyptian
and, later, of the Egypto-Arab type was steadily and almost un-
interruptedly proceeding in the northern Sudan and the negro
element was correspondingly decreasing in that region.
VI It will be seen too that this prolonged infiltration to the south was more than the return of an ancient population, reinforced by
fresh blood, to its quondam home on the river. When once the Arabs had overthrown the Christian kingdom of Dongola and established
themselves in its place, they rapidly amalgamated with the local Nubians and began to send colonies further afield.
Thus it came about that Barabra, with an Arab leaven, pene-
trated into Kordofan and settled round about the most northernly
of the Nuba mountains and intermarried with the negroes who were
^ See Seligman, Journ. Anthr. Inst. 1913, xliii, 610, and Beckett, loc. cit.
pp. 200 ff. For Keane, see Man: Past and Present, p. 75.
" Selii^an, loc. cit.
' See Part II, Chap. 2, xxxix.