But, while the seclusion of the two races upon the frontier is certain to be thus broken in instances which will form no inconsiderable exception to the rule, the substantial purity of blood may be maintained by an early adjustment of reservations, the concentration of tribes, and the exercise of disciplinary control by their agents over the movements of wandering parties. Whether, in such an event, the Indians, thus left to meet their fate by themselves, with reasonable provision by the government for their instruction in the arts of life and industry, will waste away in strength and numbers, is a question quite too large to be entered upon here. Popular beliefs and scientific opinion undoubtedly contemplate the gradual if not the speedy decline of Indian tribes when deprived of their traditional freedom of movement, pent up within limits comparatively narrow, and compelled to uncongenial occupations. But there is grave reason to doubt whether these causes are certain to operate in any such degree as to involve the practical extinction of the race within that immediate future on which we are accustomed to speculate, and for which we feel bound to make provision. On the contrary, there are many considerations and not a few facts which fairly intimate a possibility that the Indian may bear restriction as well as the negro has borne emancipation; and, like the negro, after a certain inevitable loss consequent upon a change so great and violent, adapt himself with increased vitality to new conditions. It is true that the transition, compulsory as to a great degree it must be, from a wholly barbarous condition of life, which remains to be effected for the eighty to one hundred thousand Indians still outside the practical scope of the Indian service, is likely to further reduce, for some years to come, the aggregate number of this race; but it is not improbable that this will be coincident with a steady increase among the tribes known as civilized. * * * * *