The Bible knows but one species of man. It is not said that men were created after their species, as we read of the groups of animals. Man was made, "male and female;" and in the fuller details afterwards given in the second chapter--where the writer, having finished his general narrative, commences his special history of man--but one primitive pair is introduced to our notice. We scarcely need the detailed tables of affiliation afterward given, or the declaration of the apostle who preached to the supposed autochthones of Athens, that "God has made of one blood all nations," to assure us of the Scriptural unity of man. If, therefore, there were any good reason to believe that man is not of one but several origins, we must admit Moses to have been very imperfectly informed. Nor, on the other hand, does the Bible any more than geology allow us to assign a very high antiquity to the origin of man relatively to that of the earth on which he dwells. The genealogical tables of the Bible may admit of some limits of difference of opinion as to the age of the human world or aeon, and also of that of the deluge, from which man took his second point of departure; but they do not allow us to put the origin of man farther back than that of the present or modern condition of our continents and the present races of animals. They therefore limit us to the modern or quaternary period of geology. The question of man's antiquity, so much agitated now, demands, however, a separate and careful consideration; but we must first devote a few pages to the simple statements of the Bible respecting the Sabbath of creation and its relation to human history. CHAPTER XII. THE REST OF THE CREATOR. "And the heavens and the earth were finished, and all the host of them. And on the seventh day God ended his work which he had made, and he rested on the seventh day from all his work which he had made. And God blessed the seventh day and sanctified it, because that in it God rested from all his work which he had created to make."--Genesis ii., 1-3. The end of the sixth day closed the work of creation properly so called, as well as that of forming and arranging the things created. The beginning of the seventh introduced a period which, according to the views already stated, was to be occupied by the continued increase and diffusion of man and the creatures under his dominion, and by the gradual disappearance of tribes of creatures unconnected with his well-being.