If we had no other argument in proof of the innate imparity of races than the actual condition of certain barbarous tribes, and the supposition that they had always been in that condition, and, consequently, always would be, we should expose ourselves to serious objections. For many barbarous nations preserve traces of former cultivation and refinement. There are some tribes, very degraded in every other respect, who yet possess traditional regulations respecting the marriage celebration, the forms of justice and the division of inheritances, which evidently are remnants of a higher state of society, though the rites have long since lost all meaning. Many of the Indian tribes who wander over the tracts once occupied by the Alleghanian race, may be cited as instances of this kind. The natives of the Marian Islands, and many other savages, practise mechanically certain processes of manufacture, the invention of which presupposes a degree of ingenuity and knowledge utterly at variance with their present stupidity and ignorance. To avoid hasty and erroneous conclusions concerning this seeming decadence, there are several circumstances to be taken into consideration. Let us suppose a savage population to fall within the sphere of activity of a proximate, but superior race. In that case they may gradually learn to conform externally to the civilization of their masters, and acquire the technicalities of their arts and inventions. Should the dominant race disappear either by expulsion or absorption, the civilization would expire, but some of its outward forms might be retained and perpetuated. A certain degree of mechanical skill might survive the scientific principles upon which it was based. In other words, practice might long continue after the theory was lost. History furnishes us a number of examples in support of this assertion.