The _unity of the human race_ is everywhere assumed in Scripture. Some modern scientific men have denied this, but their arguments for a diversity of origin do not amount to positive proof. They are theoretic rather than demonstrative, and the weight of evidence is against them. We must remember, moreover, that man lives under a supernatural dispensation. The narrative in the eleventh chapter of Genesis seems to imply that God interposed miraculously to confound human speech, in accordance with his plan to scatter men "abroad upon the face of all the earth." In like manner he may have interposed in a secret way to intensify the diversity in the different races of men. It does not appear certain, however, on physiological grounds, that any miraculous interposition was needed; and we may leave the question of the manner in which the present diversity among the children of Adam was produced among the secret things of which it is not necessary that we should have an explanation. The question of the _universality of the deluge_ is with believers in revelation one of words only, on which it is hardly necessary to waste time. The _end_ of the deluge was the complete destruction of the human race, all but Noah and his family. This it accomplished, and why need we raise any further inquiries; as, for example, whether the polar lands, where no man has ever trod, were submerged also? "All the high hills under the whole heaven" doubtless included all the high hills where man lived, and which, therefore, were known to man.