The ethnological position may be briefly summed up; and in order to avoid any but the most indispensable detail the schedule of types and variants and the scheme of reversion and survival in which they are concerned are here presented with a diagrammatic meagerness and simplicity which would not be admissible for any other purpose. The man of our industrial communities tends to breed true to one or the other of three main ethic types; the dolichocephalic-blond, the brachycephalic-brunette, and the Mediterranean--disregarding minor and outlying elements of our culture. But within each of these main ethnic types the reversion tends to one or the other of at least two main directions of variation; the peaceable or antepredatory variant and the predatory variant. The former of these two characteristic variants is nearer to the generic type in each case, being the reversional representative of its type as it stood at the earliest stage of associated life of which there is available evidence, either archaeological or psychological. This variant is taken to represent the ancestors of existing civilized man at the peaceable, savage phase of life which preceded the predatory culture, the regime of status, and the growth of pecuniary emulation. The second or predatory variant of the types is taken to be a survival of a more recent modification of the main ethnic types and their hybrids--of these types as they were modified, mainly by a selective adaptation, under the discipline of the predatory culture and the latter emulative culture of the quasi-peaceable stage, or the pecuniary culture proper. Under the recognized laws of heredity there may be a survival from a more or less remote past phase. In the ordinary, average, or normal case, if the type has varied, the traits of the type are transmitted approximately as they have stood in the recent past--which may be called the hereditary present. For the purpose in hand this hereditary present is represented by the later predatory and the quasi-peaceable culture.