A series of lectures by Britain's foremost anthropologist and craniologist provides a sweeping view of European racial history from Russia to Iceland, and from Scandinavia to Sicily. It includes an analysis of the different European sub-races, the "Aryan origin" theory, an overview of European Jewry and a prognosis of the racial future. "There are assuredly diversities of gifts pertaining to diverse breeds of men; and unless we are all reduced to the dull dead level of socialism, we shall continue to stand in need of all these gifts." "And I have myself seen, mixing with men whose eyes and complexion betrayed the Mongoloid strain, Tartars whose eyes, hair, complexion, and features would have passed muster among ourselves. It had for me a kind of pathetic interest to look at these men, to recognise their kindly blood, to know that the nationality they once belonged to had passed away and been forgotten, and that to which they now adhered was in progress to extinction."