And it will appear presently that the puerile spiritual make-up of these representatives of the upper and the lowest social strata shows itself also in the presence of other archaic traits than this proclivity to ferocious exploit and isolation.
As if to leave no doubt about the essential immaturity of the fighting temperament, we have, bridging the interval between legitimate boyhood and adult manhood, the aimless and playful, but more or less systematic and elaborate, disturbances of the peace in vogue among schoolboys of a slightly higher age.

In the common run of cases, these disturbances are confined to the period of adolescence.

They recur with decreasing 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.