Take the case of the wild pigeon, a subject that especially delights Mr. Darwin. Most of the deviations are confined to the domesticated breeds, and none of these rank in strength, hardiness, capability of flight, or symmetry of structure, with the wild or typical bird. There are well-defined deviations, but no sensible improvements, except to the eye of the bird-fancier. The deviations are simply entailed weaknesses, or the very reverse of what should appear from the "selection of the fittest." The fact undeniably is, that these variations are almost wholly abnormal--mere exaggerated characteristics, induced in the first instance, perhaps, by high cultivation and close in-and-in breeding. Turn these abnormal varieties loose, let them go back to the aboriginal stock, and these characteristics will rapidly disappear; that is, they will ultimately lose themselves or melt away in the original type. Mr. Darwin admits that the tendency will be to reversion, but he insists, manifestly without any positive proof therefor, that the greater tendency is to new centres of attraction, and not necessarily the primitive one. But this is mere assumption--sheer begging the question on his part,--since all the oscillations are incontestibly about the original or type centre. The same may be said of the typical races of men, like the negro and wild Indian of our prairies. You may lift them out of their primitive condition--temporarily suspend, if you please so to put it, their primordial attraction,--but, left again to themselves, they will go back to the original type; that is, their offspring will again infest the jungles and roam their native hunting-grounds. The process here is the very reverse of the Darwinian theory. Reversion, as a rule, follows the degeneracy of types, instead of there being any favorable homogeneous result, springing from a new centre of attraction. The Indian makes a splendid savage, but a very poor white man. Think of Red Jacket taking the part of Mercutio in the play or enacting the more valiant _role_ of Falstaff in King Henry the Fourth. An infusion of white blood does not help the matter, but rather makes it worse. Generally, the meanest Indian on the continent is your half-breed, and among the negroes there is no term so expressive of the contempt of that race, as that applied by them to a mulatto. The present condition of Mexico affords a striking exemplification of this law of reversion. The inheritable characteristics or variations, produced from an infusion of Spanish blood, are rapidly disappearing--the native blood whipping out the European. The potency is in the inferior blood, simply because it is the predominating one. The result has been no homogeneous new race, but a reversion, now manifestly in progress, to the type centre or aboriginal stock. And the curse pronounced by Ezekiel upon mongrel tribes--"woe unto the mingled peoples" may have a significance in this connection worth considering; but it