Some Christian writers, such as Dr. Pye Smith, Dr. Barry, and Hugh Miller, have contended that the author of the book of Genesis is describing not a universal but a partial deluge; not a flood which submerged the whole earth, out one that merely covered some particular part of the great Central Asian plains. But surely, apart from any consideration pertaining to the very emphatic language of the text, rational men must perceive that the difficulty is not obviated by this explanation, but rather increased. How could the waters ascend in one place to the height of seventeen thousand feet (the height of Mount Ararat) without overflowing the adjacent districts, and, indeed, the whole earth, in conformity to the law of gravitation? Delitzch is bold enough to assert that the flood of water was ejected with such force from the fountains beneath that it assumed quite naturally a conical shape. But then, even supposing that this explication were anything but sheer silliness, which it is not, how would the learned commentator account for the water retaining its conical shape for months after the force of upheaval had expended itself? These explanations are entirely fanciful and groundless. The language of the narrative is sufficiently explicit "And _all_ flesh died that moved upon the earth;" "all in whose nostrils was the breath of life;" "and every living substance was destroyed which was upon the face of the ground;" and "Noah _only_ remained alive and they that were with him in the ark." Such are the precise unmistakeable words of Scripture, which no sophistry can explain away. But even if the contention for a partial deluge could be made good, the fundamental difficulties would still remain. As Colenso observes, the flood, "whether it be regarded as a _universal_ or a _partial_ deluge, is equally incredible and impossible." Geology absolutely contradicts the possibility of any such catastrophe as the deluge within the historic period. According to Sir Charles Lyell, no devastating flood could have passed over the forest zone of Ætna during the last twelve thousand years; and the volcanic cones of Auvergne, which enclose in their ashes the remains of extinct animals, and present an outline as perfect as that of Ætna, are deemed older still. Kalisch forcibly presents this aspect of the question: "Geology teaches the impossibility of a universal deluge since the last six thousand years, but does not exclude a partial destruction of the earth's surface within that period. The Biblical text, on the other hand, demands the supposition of a universal deluge, and absolutely excludes a partial flood."