D.
NILOTIC ATLANTIDÆ.
This is a far less simple group than the last, and one which may, probably, require the value of some of its divisions to be raised. Besides which, it probably comprizes, if classed according to the strict rules of ethnology, the eastern Negroes of our first division. Again, it passes into the Kaffre, Coptic, and Semitic groups by imperceptible gradations. At the same time, as far as it goes, it is ethnological, i.e. it embraces populations actually affiliated to each other rather than populations exhibiting the common effects of common social or climatological conditions.
NILOTIC NATIONS AND TRIBES.
Physical conformation.—Modified Negro, in certain cases approaching the Arab conformation.
Area.—The water system of the Upper and Middle Nile.
Chief divisions.—1. Gallas. 2. Agows. 3. Nubians. 4. Bisharis(?).
As it is the southern portion of the Nilotic area, which is conterminous with the northern Kaffre, the southern populations will be noticed first.