Correlated with this native version is a peculiar and, so far as my information goes, a unique tradition that previous disasters had taken place, causing the destruction of animals and vegetables then existing, of which whole races were irrevocably lost. This tradition, which is in complete harmony with the discoveries of modern geology, is thus embodied in the thirteenth Triad: "The second perilous mishap was the terror of the torrent-fire, when the earth was cloven down to the abyss, and the majority of living things were destroyed". It is a singular coincidence that evidence of a prehistoric torrent-fire exists certainly in Ireland, where bog-buried forests have been unearthed exhibiting all the signs of a flowing torrent of molten fire or lava. According to the author of _Bogs and Ancient Forests_, when the Bog of Allen in Kildare was cut through, oak, fir, yew, and other trees were found buried 20 or 30 feet below the surface, and these trees generally lie prostrated in a horizontal position, and _have the appearance of being burned at the bottom of their trunks and roots_, fire having been found far more powerful in prostrating those forests than cutting them down with an axe; and the great depth at which these trees are found in bogs, shows that they must have lain there for many ages.[23] No ordinary or casual forest fire is capable of prostrating an oak or fir tree, and the implement which accomplished such terrific devastation must have been something volcanic and torrential in its character. I am, however, not enamoured of the Atlantean or any other theory. My purpose is rather to collate facts, and as all theorising ends in an appeal to self-evidence, it is better to allow my material, for much of which I have physically descended into the deeps of the earth, to speak for itself:--we must believe the evidence of our senses rather than arguments, and believe arguments if they agree with the phenomena.[24] Although my concordance of facts is based upon evidence largely visible to the naked eye, in a study of this character there must of necessity be a disquieting percentage of "probablys" and "possiblys". This is deplorable, but if license be conceded in one direction it cannot be withheld in another. The extent to which guess-work is still rampant in etymology will be apparent in due course; the extent to which it is allowed license in anthropology may be judged from such reveries as the following: "Did any early members of the human family commit suicide? Probably they did; the feeble, the dying, the maimed, the weak-headed, the starving, the jealous, would be tired of life; these would throw themselves from heights or into rivers, or stab themselves or cut their throats with large and keen-edged knives of flint."[25]