Spaniards were constantly migrating to the American possessions of the Spanish crown, but, with the overthrow of the Spanish dominion, this supply of white blood was cut off, and instead of the generation of mongrelism, from that instant the reparatory process began, which can only end in sloughing off the mixed blood, and the restoration of the aboriginal race to its natural and healthy condition, as it was before the Spanish conquest and the admixture of the white element. This mixed or mongrel element is found in the cities, but it is rapidly declining. Mexico had, at the era of Independence, two hundred thousand inhabitants. It has now little over one hundred thousand people. Puebla, Perote, Jalapa, all the cities of Mexico decline in similar proportion, while the rural population—the pure, untainted, aboriginal element—though placed under great and striking disadvantages, holds its own, and were it guided and cared for, as it was one hundred years ago, would doubtless rapidly increase in number. Nor is it alone the fragility, feebleness, the vicious organization and imperfect vitality of mulattoism, or of the mongrel element, that is thus rapidly diminishing the population in Mexican cities. The _morale_ of mongrelism partakes of the physical deformity, and the vices of the mind are as striking and constant as the defects of the body. A creature with half the nature and wants of the white man united in the same existence with those of the Indian, is confronted with another, perhaps three-fourths white, while on the other side of him is one who has three-fourths Indian blood, and population made up of such materials is necessarily and perpetually at war with itself. Hence in all the revolutions of Mexico there is no design, no common object that unite men in common purposes, no sense, reason, or common impulse whatever, except to destroy, to overturn, to seize power to-day without any purpose for to-morrow. And this goes on, and must go on until nature repairs the outrages inflicted on her, until mongrelism dies out and the aboriginal or Indian element is restored to its pristine condition, until every atom of the white blood is extinct and the Indian race is again what it was at the time of the Spanish conquest.