Yet little less remarkable was another device of the Incas for securing the loyalty of their subjects. When any portion of the recent conquests showed a pertinacious spirit of disaffection, it was not uncommon to cause a part of the population, amounting, it might be, to ten thousand inhabitants or more, to remove to a distant quarter of the kingdom, occupied by ancient vassals of undoubted fidelity to the crown. A like number of these last was transplanted to the territory left vacant by the emigrants. By this exchange, the population was composed of two distinct races, who regarded each other with an eye of jealousy, that served as an effectual check on any mutinous proceeding. In time, the influence of the well affected prevailed, supported, as they were, by royal authority, and by the silent working of the national institutions, to which the strange races became gradually accustomed. A spirit of loyalty sprang up by degrees in their bosoms, and, before a generation had passed away, the different tribes mingled in harmony together as members of the same community.71 Yet the different races continued to be distinguished by difference of dress; since, by the law of the land, every citizen was required to wear the costume of his native province.72 Neither could the colonist, who had been thus unceremoniously transplanted, return to his native district for, by another law, it was forbidden to any one to change his residence without license.73 He was settled for life. The Peruvian government ascribed to every man his local habitation, his sphere of action, nay, the very nature and quality of that action. He ceased to be a free agent; it might be almost said, that it relieved him of personal responsibility. In following out this singular arrangement, the Incas showed as much regard for the comfort and convenience of the colonist as was compatible with the execution of their design. They were careful that the mitimaes, as these emigrants were styled, should be removed to climates most congenial with their own. The inhabitants of the cold countries were not transplanted to the warm, nor the inhabitants of the warm countries to the cold.74 Even their habitual occupations were consulted, and the fisherman was settled in the neighborhood of the ocean, or the great lakes; while such lands were assigned to the husbandman as were best adapted to the culture with which he was most familiar.75 And, as migration by many, perhaps by most, would be regarded as a calamity, the government was careful to show particular marks of favor to the mitimaes, and, by various privileges and immunities, to ameliorate their condition, and thus to reconcile them, if possible, to their lot.76