^{page 152 note 1} See also the following studies by ProfessorSchapera, I.: (a) ‘The Political Organization of the Ngwato of Bechuanaland Protectorate’, in Fortes, M. and Evans-Pritchard, E. E., African Political Systems, London, Oxford University Press, 1940, pp. 56–82Google Scholar; (b) Native Land Tenure in the Bechuanaland Protectorate, Alice, Lovedale Press, 1943Google Scholar; (c) Tribal Legislation among the Tswana of Bechuanaland Protectorate. A study in the Mechanism of Culture Change (London School of Economics Monographs on Social Anthropology, No. 9), London, Lund Humphries, 1945Google Scholar; (d) Migrant Labour and Tribal Life: A study of Conditions in the Bechuanaland Protectorate, London, Oxford University Press, 1947.Google Scholar