Study of the social organization of Aborigines with little experience of settlement life; Concentrated at Beswick Reserve, Katherine, Pine Creek, El Shirana & Sleisbeck districts also visited; Sketch of historical past of region; List and map of main tribes in area; Notes on kinship, marriage, moieties, sections & sub-sections, alternate marriages, clans; Decline of polygyny; Terms of address & reference, age categories; Corroboree and hunting groups; Creation beliefs, totemism definition; Meaning & purpose of Gunabibi ritual, rites & myths of cults; Notes on body decoration & song cycles; Detailed description of Gunabibi & Jabalurawa ceremonies.