frequency and acuteness as youth merges into adult life, and so they reproduce, in a general way, in the life of the individual, the sequence by which the group has passed from the predatory to a more settled habit of life. In an appreciable number of cases the spiritual growth of the individual comes to a close before he emerges from this puerile phase; in these cases the fighting temper persists through life. Those individuals who in spiritual development eventually reach man's estate, therefore, ordinarily pass through a temporary archaic phase corresponding to the permanent spiritual level of the fighting and sporting men. Different individuals will of course achieve spiritual maturity and sobriety in this respect in different degrees; and those who fail of the average remain as an undissolved residue of crude humanity in the modern industrial community and as a foil for that selective process of adaptation which makes for a heightened industrial efficiency and the fulness of life of the collectivity.
This arrested spiritual development may express itself not only in a direct participation by adults in youthful exploits of ferocity, but also indirectly in aiding and abetting disturbances of this kind on the part of younger persons. It thereby furthers the formation of habits of ferocity which may persist in the later life of the growing generation, and so retard any movement in the direction of a more peaceable effective temperament on the part of the community. If a person so endowed with a proclivity for exploits is in a position to guide the development of habits in the adolescent members of the community, the influence which he
