Attempts to relate civilization to race by measuring the relation of brain to face or weight have shed little light on the problem. If the Negroes of Africa have produced no great civilization it is probably because climatic and geographical conditions frustrated them; would any of the white “races” have done better in those environments? It is remarkable how many American Negroes have risen to high places in the professions, arts, and letters in the last one hundred years despite a thousand social obstacles.
