the first step towards civilization, since it cannot overcome the natural repugnance, felt by men and animals alike, to a crossing of blood.
Leaving these tribes, that are incapable of civilization, on one side, we come, in our journey upwards, to those which understand that if they wish to increase their power and prosperity, they are absolutely compelled, either by war or peaceful measures, to draw their neighbours within their sphere of influence. War is undoubtedly the simpler way of doing this. Accordingly, they go to war. But when the campaign is finished, and the craving for destruction is satisfied, some prisoners are left over; these prisoners become slaves, and as slaves, work for their masters. We have class distinctions at once, and an industrial system: the tribe has become a little people. This is a higher rung on the ladder of civilization, and is not necessarily passed by all the tribes which have been able to reach it; many remain at this stage in cheerful stagnation.
But there are others, more imaginative and energetic, whose ideas soar beyond mere brigandage. They manage to conquer a great territory, and assume rights of ownership not only over the inhabitants, but also over their land. From this moment a real nation has been formed. The two races often continue for a time to live side by side without mingling; and yet, as they become indispensable to each other, as a community of work and interest is gradually built up, as the pride and rancour of conquest begin to ebb away, as those below naturally tend to rise to the level of their masters, while the masters have a thousand reasons for allowing, or even for promoting, such a tendency, the mixture of blood finally takes place, the two races cease to be associated with distinct tribes, and become more and more fused into a single whole.
The spirit of isolation is, however, so innate in the human race, that even those who have reached this advanced stage of crossing refuse in many cases to take a step, further. There are some peoples who are, as we know positively, of mixed origin, but who keep their feeling for the clan to an extraordinary degree. The
