"In the Nautical Magazine for 1835, p. 642, and for 1838, p. 361, and in the Comptes Rendus, April, 1838, accounts are given of a series of volcanic phenomena, earthquakes, troubled water, floating scoria, and columns of smoke, which have been observed at intervals since the middle of the last century, in a space of open sea between longitudes 20° and 22' W., about half a degree south of the equator. These facts, says Mr. Darwin, seem to show that an island or archipelago is in process of formation in the middle of the Atlantic. A line joining St. Helena and Ascension would, if prolonged, intersect this slowly nascent focus of volcanic action. Should land be eventually formed here, it will not be the first that has been produced by igneous action in this ocean since it was inhabited by the existing species of testacea. At Porto Praya, in St. Jago, one of the Azores, a horizontal, calcareous stratum occurs, containing shells of recent marine species, covered by a great sheet of basalt eighty feet thick. It would be difficult to estimate too highly the commercial and political importance which a group of islands might acquire if, in the next two or three thousand years, they should rise in mid-ocean between St. Helena and Ascension." These facts would seem to show that the great fires which destroyed Atlantis are still smouldering in the depths of the ocean; that the vast oscillations which carried Plato's continent beneath the sea may again bring it, with all its buried treasures, to the light; and that even the wild imagination of Jules Verne, when he described Captain Nemo, in his diving armor, looking down upon the temples and towers of the lost island, lit by the fires of submarine volcanoes, had some groundwork of possibility to build upon. But who will say, in the presence of all the facts here enumerated, that the submergence of Atlantis, in some great world-shaking cataclysm, is either impossible or improbable? As will be shown hereafter, when we come to discuss the Flood legends, every particular which has come down to us of the destruction of Atlantis has been duplicated in some of the accounts just given. We conclude, therefore: 1. That it is proven beyond question, by geological evidence, that vast masses of land once existed in the region where Atlantis is located by Plato, and that therefore such an island must have existed; 2. That there is nothing improbable or impossible in the statement that it was destroyed suddenly by an earthquake "in one dreadful night and day." CHAPTER. V. THE TESTIMONY OF THE SEA.