It is obvious, therefore, that attempts to classify mankind, based on the present distribution of type, language and culture, must lead to different results, according to the point of view taken; that a classification based primarily on type alone will lead to a system which represents more or less accurately the blood- relationships of the people; but these do not need to coincide with their cultural relationships. In the same way classifications based on language and culture do not need to coincide with a biological classification.