THERE can be no question as to the originality and value of this book as a contribution to West African ethnology. Mr. Dennett has lived many years amongst the Bavihi and other tribes of the Kakongo district (Luango coast) immediately north of the Congo mouth. He has also of late lived as an official several years in the Benin district of the Niger Delta. About three-quarters of the book under review deals with the hierarchy of kings and chiefs, the laws, social organisation, marriage, birth, and death customs, psychology and philosophy of the Bavili; the remainder of the book treats with much the same subjects as they have been observed by the author in Benin. Finally, there is a valuable appendix by Bishop James Johnson on the religious beliefs and social laws of the Yoruba people.