1966 年 1966 巻 3 号 p. 65-85
This report is based upon the data collected by a social anthropological field work at the village of Mangola in the Mbulu District of the north-central part of Tanzania. The field work was carried out from May, 1963 to April, 1964 when the author was enrolled as a member of anthropological team of Kyoto University Africa Scientific Expedition. The village of Mangola is a “compound society, ” consisting of agricultural Bantu, agrico-pastoral Mbulu, pastoral Mangati, and hunting-gathering Tindiga. The author tries to illustrate the social functions of “tribe” by investigating marriage systems, political systems, life histories of migrating individuals (the migration is called tembea in Swahili), and so on. He found out that “tribe” in this area is not isolated society but rather fluid and open.