During the early years of their occupation, the Nubians beyond a question treated the country most shamefully; there are traces still existing which demonstrate that large villages and extensive plots of cultivated land formerly occupied the scene where now all is desolation. Boys and girls were carried off by thousands as slaves to distant lands; and the Nubians, like the _parvenu_ who looks upon his newly-acquired wealth as inexhaustible, regarded the territory as being permanently productive; they revelled like monkeys in the durra-fields of Taka and Gedaref. In course of time they came to know that the enduring value of the possessions which they had gained depended mainly on the physical force at their disposal; they began to understand how they must look to the hands of the natives for the cultivation of their corn, and to their legs for the transport of their merchandise. Meanwhile, altogether, the population must have diminished by at least two-thirds. According to a careful estimate that I made of the numbers of huts in the villages around the Seribas and the numbers of bearers levied in the several districts, I found that the population could not at most be reckoned at more than 100,000, scattered over an area of nearly 9000 square miles. On first landing from the rivers, the Khartoomers opened up an intercourse with the Dinka, who did not refuse to furnish them with bearers and interpreters for their further progress into the interior, and it was from them that they learnt the names of the different tribes. In Central Africa every nation has a different designation for its neighbours than that by which they are known among themselves; and it is the same with the rivers, which have as many names as the nations through whose territory they flow. In this way the Nubians have adopted the Dinka appellations of Dyoor for Lwoh, Niam-niam for Zandey, and Dohr for Bongo. This last people always style themselves Bongo, and the Khartoomers, since they have made their headquarters in their territory, have discarded the Dinka name of Dohr, and now always use the native term Bongo. According to the Arabic form of expression, the plural of Dohr is Derahn, and of Niam-niam it is Niamahniam. [Sidenote: COMPLEXION OF THE BONGO.]