WITHIN the last generation or so, anthropology-the study of man's ' culture,' that is, his language, customs, religion and social organization, at various stages of development-has not merely attained the dignity of a science, but invaded many other fields. The historian, the sociologist and the political theorist, for instance, find themselves continually challenged by the anthropologist to revise their ideas in view of his work. In these talks Mr. Driberg will outline the elements of the subject, and today ho will show what we can learn about our own pro-history by studying the primitive peoples existing today-a study which, in a long residence in Central Africa, he has been able to pursue at first hand.