may be, are easily disrupted, because each little component of the group is equally capable of separate existence. Each can do just what the other can. Owing to the hardships of their lot in external relations they are thrown upon each other. No particular qualifications of these instinctive allies are involved, however. They can associate quite at will.
The cohesion of a great civilized group, on the other hand, rests on its division of labor. The one is absolutely dependent on the others. The disruption of the group would leave each individual quite helpless. Thus division of labor, with its linking of individuals to each other, works against variability in case this would harmfully affect the maintenance of the group. This will be observable even in small groups. A band of settlers will be on the whole very pliable and variable. It will dispose itself now in centralized form, now in very free fashion, according as it is under pressure from without or has plenty of scope for action. It will confide leadership according to changing interests to frequently changing persons. It will seek prosperity now in attachment to other groups, now in exercise of the largest autonomy. These variations of their sociological form will be sure in certain cases to promote self-preservation. On the whole, however, they will give occasion for conflicts, uncertainties, and divisions; all this is energetically counterbalanced by developed division of labor. On the one hand, this puts the individual into dependence upon the group; on the other hand, it gives the group a lively interest in holding fast to the individual.
In all the cases considered thus far, the easy changeability of group life, its inclination to transfers of both formal and personal sorts, has been an adaptation to the necessities of life; a bending necessary to avoid breaking, whenever there is a lack of that substantial firmness which, in any event, would defeat every exertion of destructive force. By its variability the group responds to the change of circumstances, and accommodates it so that the result is its own confirmation. But it may now be asked whether such changeability, such persistence through changing and often contradictory conditions, actually promotes
