Before the incursions of the Nubian-Arab traders and raiders, who began to form settlements (zeribas, fenced stations) in the Upper Nile regions above Khartum about the middle of the nineteenth century, most of the Nile-Congo divide (White Nile tributaries and Welle-Makua basin) belonged in the strictest sense to the Negro domain. Sudanese tribes, and even great nations reckoned by millions, had been for ages in almost undisturbed possession, not only of the main stream from the equatorial lakes to and beyond the Sobat junction, but also of the Sobat Valley itself, and of the numerous south-western head-waters of the White Nile converging about Lake No above the Sobat junction. Nearly all the Nile peoples—the Shilluks and Dinkas about the Sobat confluence, the Bari and Nuers of the Bahr-el-Jebel, the Bongos (Dors), Rols, Golos, Mittus, Madis, Makarakas, Abakas, Mundus, and many others about the western affluents, as well as the Funj of Senaar—had been brought under the Khedivial rule before the revolt of the Mahdi.

Political Relations.

The same fate had already overtaken or was threatening the formerly powerful Mombuttu (Mangbattu) and Zandeh[212] nations of the Welle lands, as well as the Krej and others about the low watersheds of the Nile-Congo and Chad basins. Since then the Welle groups have been subjected to the jurisdiction of the Congo Free State, while the political destinies of the Nilotic tribes must henceforth be controlled by the British masters of the Nile lands from the Great Lakes to the Mediterranean.

Although grouped as Negroes proper, very few of the Nilotic peoples present the almost ideal type of the blacks, such as those of Upper Guinea and the Atlantic coast of West Sudan. The complexion is in general less black, the nose less broad at the base, the lips less everted (Shilluks and one or two others excepted), the hair rather less frizzly, the dolichocephaly and prognathism less marked.

Two Physical Types.

Apart from the more delicate shades of transition, due to diverse interminglings with Hamites and Semites, two distinct types may be plainly distinguished—one black, often very tall, with long thin legs, and long-headed (Shilluks, Dinkas, Bari, Nuers, Alur), the other reddish or ruddy brown, more thick-set, and short-headed (Bongos, Golos, Makarakas, with the kindred Zandehs of the Welle region). No explanation has been offered of their brachycephaly, which is all the more difficult to account for, inasmuch as it is characteristic neither of the aboriginal Negro nor of the intruding Hamitic and Semitic elements. Have we here an indication of the transition suspected by many between the true long-headed Negro and the round-headed Negrillo, who is also brownish, and formerly ranged as far north as the Nile head-streams, as would appear from the early Egyptian records (Chap. IV.)? Schweinfurth found that the Bongos were "hardly removed from the lowest grade of brachycephaly[213]," and the same is largely true of the Zandehs and their Makaraka cousins, as noticed by Junker: "The skull also in many of these peoples approaches the round form, whereas the typical Negro is assumed to be long-headed[214]." But so great is the diversity of appearance throughout the whole of this region, including even "a striking Semitic type," that this observer was driven to the conclusion that "woolly hair, common to all, forms in fact the only sure characteristic of the Negro[215]."

The Dinka.

Dinka is the name given to a congeries of independent tribes spread over a vast area, stretching from 300 miles south of Khartum to within 100 miles of Gondokoro, and reaching many miles to the west in the Bahr-el-Ghazal Province. All these tribes according to C. G. Seligman[216] call themselves Jieng or Jenge, corrupted by the Arabs into Dinka; but no Dinka nation has arisen, for the tribes have never recognised a supreme chief, as do their neighbours, the Shilluk, nor have they even been united under a military despot, as the Zulu were united under Chaka. They differ in manners and customs and even in physique and are often at war with one another. One of the most obvious distinctions in habits is between the relatively powerful cattle-owning Dinka and the small and comparatively poor tribes who have no cattle and scarcely cultivate the ground, but live in the marshes in the neighbourhood of the Sudd, and depend largely for their sustenance on fishing and hippopotamus-hunting. Their villages, which are generally dirty and evil-smelling, are built on ground which rises but little above the reed-covered surface of the country. The Dinka community is largely autonomous under leadership of a chief or headman (bain) who is sometimes merely the local magician, but in one community in each tribe he is the hereditary rain-maker whose wish is law. "Cattle form the economic basis of Dinka society; ... they are the currency in which bride-price and blood-fines are paid; and the desire to acquire a neighbour's herds is the common cause of those inter-tribal raids which constitute Dinka warfare."

Linguistic Groups.

Some uniformity appears to prevail amongst the languages of the Nile-Welle lands, and from the rather scanty materials collected by Junker, Fr. Müller was able to construct an "Equatorial Linguistic Family," including the Mangbattu, Zandeh, Barmbo, Madi, Bangba, Krej, Golo and others, on both sides of the water-parting. Leo Reinisch, however, was not convinced, and in a letter addressed to the author declared that "in the absence of sentences it is impossible to determine the grammatical structure of Mangbattu and the other languages. At the same time we may detect certain relations, not to the Nilotic, but the Bantu tongues. It may therefore be inferred that Mangbattu and the others have a tolerably close relationship to the Bantu, and may even be remotely akin to it, judging from their tendency to prefix formations[217]." Future research will show how far this conjecture is justified.