Originally published in 1947, this book was written as part of a broader project to reach a greater understanding of group psychology through social anthropology, particularly in relation to the formation of national identity. The text presents a comprehensive study of the Lango people, dissecting the structure of their society into its constituent groups and analysing the physical, spiritual and emotional forces keeping each group in existence. The value of each group in the economy of the Lango is also examined. Numerous illustrative figures are included. This book will be of value to anyone with an interest in the development of anthropology and the Lango people.