The organization of the Delta, it would appear, was more slowly brought about. It must have greatly resembled that of the lowlands of Equatorial Africa, towards the confluence of the Bahr el Abiad and the Bahr el Ghazal. Great tracts of mud, difficult to describe as either solid or liquid, marshes dotted here and there with sandy islets, bristling with papyrus reeds, water-lilies, and enormous plants through which the arms of the Nile sluggishly pushed their ever-shifting course, low-lying wastes intersected with streams and pools, unfit for cultivation and scarcely available for pasturing cattle. The population of such districts, engaged in a ceaseless struggle with nature, always preserved relatively ruder manners, and a more rugged and savage character, impatient of all authority. The conquest of this region began from the outer edge only. A few principalities were established at the apex of the Delta in localities where the soil had earliest been won from the river. It appears that one of these divisions embraced the country south of and between the bifurcation of the Nile: Aunu of the North, the Heliopolis of the Greeks, was its capital. In very early times the principality was divided, and formed three new states, independent of each other. Those of Aunu and the Haunch were opposite to each other, the first on the Arabian, the latter on the Libyan bank of the Nile. The district of the White Wall marched with that of the Haunch on the north, and on the south touched the territory of the Oleander. Further down the river, between the more important branches, the governors of Sai's and of Bubastis, of Athribis and of Busiris, shared among themselves the primitive Delta. Two frontier provinces of unequal size, the Arabian on the east in the Wady Tumilat, and the Libyan on the west to the south of Lake Mareotis, defended the approaches of the country from the attacks of Asiatic Bedawins and of African nomads. The marshes of the interior and the dunes of the littoral, were not conducive to the development of any great industry or civilization. They only comprised tracts of thinly populated country, like the principalities of the Harpoon and of the Cow, and others whose limits varied from century to century with the changing course of the river. The work of rendering the marshes salubrious and of digging canals, which had been so successful in the Nile Valley, was less efficacious in the Delta, and proceeded more slowly. Here the embankments were not supported by a mountain chain: they were continued at random across the marshes, cut at every turn to admit the waters of a canal or of an arm of the river. The waters left their usual bed at the least disturbing influence, and made a fresh course for themselves across country. If the inundation were delayed, the soft and badly drained soil again became a slough: should it last but a few weeks longer than usual, the work of several generations was for a long time undone.