SPECULATIONS UPON THE HUMAN MIND IN 1915

atmosphere of calm within the herd, so that the individual members can occupy themselves in the serious business of grazing. It must be doubted whether a truly herbivorous animal of a solitary habit could ever flourish when we remember how incessant must be his industry in feeding if he is to be properly nourished, and how much such an occupation will be interfered with by the constant alarms he must be subject to if he is to escape the attacks of carnivorous enemies. The evidence suggests that protective gre­gar­i­ous­ness is a more elaborate manifestation of the social habit than the aggressive form. It is clear that the security of the higher herbivora, such as the ox and especially the horse and their allies, is considerable in relation to the carnivora. One may {112} permissibly perhaps indulge the speculation that in the absence of man the horse possibly might have developed a greater complexity of organization than it has actually been able to attain; that the facts should seem to contain this hint is a curious testimony to the wonderful