Pula: Botswana Journal of African Studies, Vol. 15 No.1 (2001) "' (Issue #24) Special Issue: " Essays on Botswana Archaeology edited by Karim Sadr 1 Introduction " ~ Karim Sadr " 3 Bakgalagadi settlements in historical and archaeofogical perspective Patricia Maungo Lepekoane 23 An archaeological survey of Ntsweng in Molepolole Princess Sekgarametso ~ 46 Archaeology and mud wall decay in the Bobirwa area: an ethnoarchaeological survey M.D.L. Baloi 60 An archaeological examination of ostrich eggshell beads in Botswana Milton C. Tapela 75 Salt production and the salt trade in the Makgadikgadi Pans Kabe/o Matshetshe 91 Settlement and land use between the 11th and 17th centuries in eastern Botswana Donald Mookodi 108 Butchery styles and the processing of cattle carcasses in Botswana Cynthia Mooketsi 125 Vitrified dung in archaeological contexts: an experimental study on the process of its formation in the Mosu and Bobirwa areas Bafentse Peter 144 An ethnographic study of initiation schools among the Bakgatla ba ga Kgafela at Mochudi (1874-1988) Morongwa Nancy Mosothwane Pula: Botswana Journal of African Studies is published by the Research and Development Unit, University of Botswana, Private Bag UB-00708, Gaborone, Botswana. Pula: Botswana Journal of African Studies is distributed by the Educa- tional Book Service, Private Bag BR-42, Gaborone, Botswana. email: ivy@ebs.info.bw; fax: (+267) 300462; tel: (+267) 304283 web-site: http://schapera.fws1.com/pula ISSN 0256-2316