obsolescent among the common people. This does not say that there is not an appreciable number of individuals among the industrial classes in whom the martial spirit asserts itself obtrusively. Nor does it say that the body of the people may not be fired with martial ardour for a time under the stimulus of some special provocation, such as is seen in operation to-day in more than one of the countries of Europe, and for the time in America. But except for such seasons of temporary exaltation, and except for those individuals who are endowed with an archaic temperament of the predatory type, together with the similarly endowed body of individuals among the higher and the lowest classes, the inertness of the mass of any modern civilised community in this respect is probably so great as would make war impracticable, except against actual invasion. The habits and aptitudes of the common run of men make for an unfolding of activity in other, less picturesque directions than that of war.
This class difference in temperament may be due in part to a difference in the inheritance of acquired traits in the several classes, but it seems also, in some measure, to correspond with a difference in ethnic derivation. The class difference is in this respect visibly less in those countries whose population is relatively homogeneous, ethnically, than in the countries where there is a broader divergence between the ethnic elements that make up the several classes of the community. In the same connection it may be noted that the later accessions to the leisure class in the latter countries, in a general way, show less of the martial spirit than con-
