Frontier Tribes—The Bonjo Cannibals.
In some districts the demarcation is not quite distinct, as in the Tana basin, where some of the Galla and Somali Hamites from the north have encroached on the territory of the Wa-Pokomo Bantus on the south side of the river. But on the central plateau M. Dybowski passed abruptly from the territory of the Bonjos, northernmost of the Bantu tribes, to that of the Sudanese Bandziri, a branch of the widespread Zandeh people. In this region, about the crest of the Congo-Chad water-parting, the contrasts appear to be all in favour of the Sudanese and against the Bantus, probably because here the former are Negroids, the latter full-blood Negroes. Thus Dybowski[226] found the Bonjos to be a distinctly Negro tribe with pronounced prognathism, and altogether a rude, savage people, trading chiefly in slaves, who are fattened for the meat market, and when in good condition will fetch about twelve shillings. On the other hand the Bandziri, despite their Niam-Niam connection, are not cannibals, but a peaceful, agricultural people, friendly to travellers, and of a coppery-brown complexion, with regular features, hence perhaps akin to the light-coloured people met by Barth in the Mosgu country.
The Baya Nation.
Possibly the Bonjos may be a degraded branch of the Bayas or Nderes, a large nation, with many subdivisions widely diffused throughout the Sangha basin, where they occupy the whole space between the Kadei and the Mambere affluents of the main stream (3° to 7° 30' N.; 14° to 17° E.). They are described by M. F. J. Clozel[227] as of tall stature, muscular, well-proportioned, with flat nose, slightly tumid lips, and of black colour, but with a dash of copper-red in the upper classes. Although cannibals, like the Bonjos, they are in other respects an intelligent, friendly people, who, under the influence of the Muhammadan Fulahs, have developed a complete political administration, with a Royal Court, a Chancellor, Speaker, Interpreter, and other officials, bearing sonorous titles taken chiefly from the Hausa language. Their own Bantu tongue is widespread and spoken with slight dialectic differences as far as the Nana affluents.
A "Red People."
M. Clozel, who regards them as mentally and morally superior to most of the Middle and Lower Congo tribes, tells us that the Bayas, that is, the "Red People," came at an unknown period from the east, "yielding to that great movement of migration by which the African populations are continually impelled westwards." The Yangere section were still on the move some twelve years ago, but the general migration has since been arrested by the Fulahs of Adamawa. Human flesh is now interdicted to the women; they have domesticated the sheep, goat, and dog, and believe in a supreme being called So, whose powers are manifested in the dense woodlands, while minor deities preside over the village and the hut, that is, the whole community and each separate family group. Thus both their religious and political systems present a certain completeness, which recalls those prevalent amongst the semi-civilised peoples of the equatorial lake region, and is evidently due to the same cause—long contact or association with a race of higher culture and intelligence.
The North-East Door to Bantuland.
In order to understand all these relations, as well as the general constitution of the Bantu populations, we have to consider that the already-described Black Zone, running from the Atlantic seaboard eastwards, has for countless generations been almost everywhere arrested north of the equator by the White Nile. Probably since the close of the Old Stone Age the whole of the region between the main stream and the Red Sea, and from the equator north to the Mediterranean, has formed an integral part of the Hamitic domain, encroached upon in prehistoric times by Semites and others in Egypt and Abyssinia, and in historic times chiefly by Semites (Arabs) in Egypt, Upper Nubia, Senaar, and Somaliland. Between this region and Africa south of the equator there are no serious physical obstructions of any kind, whereas farther west the Hamitic Saharan nomads were everywhere barred access to the south by the broad, thickly-peopled plateaux of the Sudanese Black Zone. All encroachments on this side necessarily resulted in absorption in the multitudinous Negro populations of Central Sudan, with the modifications of the physical and mental characters which are now presented by the Kanuri, Hausas, Songhai and other Negroid nations of that region, and are at present actually in progress amongst the conquering Fulah Hamites scattered in small dominant groups over a great part of Sudan from Senegambia to Wadai.
Semitic Elements of the Bantu Amalgam.
It follows that the leavening element, by which the southern Negro populations have been diversely modified throughout the Bantu lands, could have been drawn only from the Hamitic and Semitic peoples of the north-east. But in this connection the Semites themselves must be considered as almost une quantité négligeable, partly because of their relatively later arrival from Asia, and partly because, as they arrived, they became largely assimilated to the indigenous Hamitic inhabitants of Egypt, Abyssinia, and Somaliland. Belief in the presence of a Semitic people in the interior of S.E. Africa in early historic times was supported by the groups of ruins (especially those of Zimbabwe), found mainly in Southern Rhodesia, described in J. T. Bent's Ruined Cities of Mashonaland. Exploration in 1905 dispelled the romance hitherto connected with the "temples" and produced evidence to show that they were not earlier in date than the fourteenth or fifteenth centuries and were of native construction[228]. They probably served as distributing centres for the gold traffic carried on with the Semitic traders of the coast. For certainly in Muhammadan times Semites from Arabia formed permanent settlements along the eastern seaboard as far south as Sofala, and these intermingled more freely with the converted coast peoples (Wa-Swahili, from sahel = "coast"), but not with the Kafirs, or "Unbelievers," farther south and in the interior. In our own days these Swahili half-breeds, with a limited number of full-blood Arabs[229], have penetrated beyond the Great Lakes to the Upper and Middle Congo basin, but rather as slave-hunters and destroyers than as peaceful settlers, and contracting few alliances, except perhaps amongst the Wa-Yao and Ma-Gwangara tribes of Mozambique, and the cannibal Ma-Nyemas farther inland.