The common fighting plays of children markedly exhibit this voluntary submission to a leader, less known, I think, in regulation games than in the many contests which a crowd of children will naturally fall into when a few belligerent spirits are present; when there is a trick to be played on schoolmates or janitor, an orchard to plunder, some unpopular person to annoy by breaking his windows or otherwise damaging his property—in these escapades the leader’s word has absolute authority, and the most docile children will commit deeds in blind obedience which fill their parents with amazement and horror. The influence of example is a factor not to be overlooked, but it is not by any means all; more influential still is the _esprit de corps_ after the plot is once hatched. Formerly, when children were given more freedom in this direction, schoolboy leagues were of great importance, but even now their associations for contest play a weighty part in youthful life; there they learn to see how common peril strengthens the bond of union and enjoins submission to the leader. It is an illustration in miniature of the influence of war on the evolution of society. This leads to the observation that play is instrumental in teaching children submission to law as well as to a leader. Thus H. Schiller says very truly of gymnastic exercises: “They promote not only presence of mind, dexterity, skill, and readiness, but furnish as well valuable training for society. Law and limitation are here self-imposed by the players, and he finds them again in the bounds which he strives to transcend.”[623] Since gymnastic and belligerent games afford exercise chiefly to males, we trace here an interesting distinction between the sexes. It seems that those manifestations of the social impulse relating to subordination are not pursued by women so energetically nor in the same way as with men. Woman is the guardian of good form, but as a rule she will not subordinate herself to rigorous law. I think any customs agent will bear me out in this statement from his observation of the behaviour of travellers. This probably results from a difference in the instinctive equipment of the sexes; fighting impulses, which are strongly developed in the males, further the social ones by reason of their imperative requirement of association. This is apparent in the exercises referred to by Schiller, and is materially advanced by the practice which play affords. The success of American women in their movement for emancipation is largely furthered by their participation with men in various sports and the consequent better development of their social capacities.