220 THE TASK OF ADMINISTRATION attached himself to AH Wad Rahma, whose dem, or fort, is still visible. The Nuers endeavoured to enlist the sympathies of the Khor Filus Dinkas against the slavers, but they were definitely refused.

The next event was an expedition by Nuer Amer and the slavers to the district of Lak, on the White Nile side, which was decimated and destroyed ; and in the course of many raids on Gaweir a woman was captured who was the mother of the late Sheikh Diu. Desperate feuds ensued, and eventually Diu assumed the dual personality called kugoor, one side of which is something external to the human personality, supernatural and mystical. Diu was in reality the name of the mystical familiar of this Sheikh, whose own name (laid aside) was Deng Lakar.

The Arabs then succeeded in turning the indifference of the Dinkas into active resistance, and with Nuer Amer once again they succeeded in imposing the payment of tribute on Diu, who was eventually pressed beyond bounds of endurance on a favourite black-and-white bull being demanded.

He refused, and, fruitlessly appealing once more to the Dinkas, gathered his spearmen and irresistibly drove the former north to the Khor Filus, all save a remnant of the Ol tribe, which fled to the protection of the Twi Dinkas farther south. The arrival of British power put an end to Arab interference, but the Ol and the Khor Filus Dinkas have consistently followed the cunning, thieving habits which their ancestor Deng Dit