to the Anthropology of the Sudan. 153

3. There is a striking agreement in the physical characters of the first and fourth and in the fifth and sixth of these groups ; and there is a well-marked contrast in the physical characters of the first and second groups, and in those of

the third and fourth groups.

4. The cephalic index varies in different parts of the Sudan, the White Nile tribes and those of the S.E. Ghazal being most dolichocephalic, while the tribes of Dar Fur, Dar Nuba, Dar Fertit and those in the S.W. Ghazal are mesaticephalic. The tribes of the Blue Nile and of Lake Chad are intermediate between these extremes.

5. The nasal index varies as a rule with the cephalic index, a relatively narrower nose going with a narrower head and a relatively broader nose with a broader head.

6. The upper facial index does not vary much, but it tends to decrease as the cephalic index increases, that is, the face tends to be broader when the head is

broader.

7. The radio-gnathic index is highest among the tribes of the White Nile, lowest among the tribes of the Blue Nile and of Lake Chad.

8. The stature decreases from north to south. The tribes of the Blue Nile are relatively short.

9. The colour of the eyes and the type of hair remain constant throughout the Sudanese tribes.

10. No great differences in skin colour among the different tribes appear to exist.

11. The head is far more ellipsoid among the White Nile tribes than among any of the other tribes.

12. The forehead, chin, and lips vary considerably in all the tribes.

Appendix.

The following tables give the more important measurements. A complete list

of the data sought for has been already published1; it need not be repeated here :—

2 Journal Anthrop. Inst., 1903, vol. xxxiii, pp. 82, 83 ; 1906, vol. xxxvi, p. 237.