the chronology of Egyptians and Babylonians to times when, as we know on physical evidence, the Valley of the Nile was an arm of the sea, and the plain of the Euphrates an extension of the Persian Gulf. It is fortunate for the Bible that such assumptions are not required by its history. CHAPTER X SPECIAL QUESTIONS RESPECTING THE DELUGE In studying the literature relating to the Deluge, we are constantly met by questions as to its so-called 'universality.' Was it a local or universal Deluge and if universal in what sense so? This is a point in which neglect or ignorance of the necessary physical conditions has led to the strangest misconceptions. It is obvious that there are four senses in which a catastrophe like the Deluge of Noah may be affirmed or denied to have been universal. 1. It may have been universal in the sense of being a deep stratum of water covering the whole globe, both land and sea. Such universality could not have been in the mind of the writer, and probably has been claimed knowingly by no writer in modern times. Halley in the last century understood the conditions of such universality, though he seems to have supposed that the impact of a comet might supply the necessary water. Owen has directed attention to the fact that such a deluge might be as fatal to the inhabitants of the waters as to those of the land. In any case, such universality would demand an enormous supply of water from some extra-terrestrial source. 2. The Deluge may have been universal in the sense of being a submersion of the whole of the land, either by subsidence or by elevation of the ocean bed. Such a state of things may have existed in primitive geological ages before our continents were elevated, but we have no scientific evidence of its recurrence at any later time, though large portions of the continents have been again and again submerged. The writers of Genesis i. and of Psalm civ. seem to have known of no such total submergence since the elevation of the first dry land, and nothing of this kind is expressed or certainly implied in the Deluge story. 3. The Deluge may have been universal in so far as man, its chief object, and certain animals useful or necessary to him, are concerned. This kind of universality would seem to have been before the mind of the writer when he says that 'Noah only, and they who were with him in the ark, remained alive.'[55] [55] Genesis vii. 23.