chanting and swinging back and forth on hammocks. The men would swing in hammocks placed closer to the ceiling, while the women would swing on hammocks that hung lower to the ground. They would also exchange gifts to members of the same gender. The gifts had to be of equal value to each other, so men often exchanged arrows or arrowheads while the women would exchange articles of clothing, primarily woven skirts. References Literature Crabites, Pierre. Gordon, The Sudan and Slavery Greenwood Press, 1970. Northrup, David. Beyond the Bend in the River: African Labor in Eastern Zaire, 1865-1940 Ohio University Center for International Studies, 1988. Udal, John O. The Nile in darkness: conquest and exploration, 1504-1862 Michael Russell Publishing, 1998. Speke, John Hanning. Journal of the discovery of the source of the Nile. Edinburgh/London: Blackwood and sons, 1863. Seligman, C. G., and Seligman, B. Z., ‘Pagan Tribes of the Nilotic Sudan.’ George Routledge & Sons Ltd., London, 1932. Collins, Robert O., ‘Land beyond the Rivers, the Southern Sudan, 1898–1918.’ Yale University Press, New Haven and London, 1971. Regib Yunis, ‘Notes on the Kuku and other minor tribes inhabiting Kajo-Keji District, Mongalla province.’ SNR VII (1) 1936 pp 1– 41. Peter Rohrbacher: Logwit-lo-Ladú (1848–1866): Seine Bedeutung als afrikanische Gewährsperson in der Frühphase der österreichischen Afrikanistik in: Michel Espagne; Pascale Rabault, David Simo (Hg.), Afrikanische Deutschland-Studien und deutsche Afrikanistik – ein Spiegelbild. Würzburg 2014, 49–72. External links Ethnic groups in South Sudan Ethnic groups in Uganda