Putting these facts together, we cannot doubt that the submergence at the close of the palanthropic age was very considerable, and that it was followed by a partial re-emergence. Further, there is no evidence of any serious fractures or folding of the crust taking place at the time, though it is possible that great lava ejections like some of those of Western America may belong to this period. It is therefore allowable to suppose that the cause of submergence may have been either depression of the land, or elevation of the bed of the ocean throwing its waters over the land, or possibly a combination of both. Movements of these kinds have recurred again and again in geological time. Their causes are mysterious, but their effects have been of the most stupendous character. Fortunately, they occur at rare intervals, and that to which we are now referring is the last of which we have any record, and differs from all others in having occurred at a time when man was widely spread over the world.
The geological chronometers already referred to inform us that the land of the northern hemisphere rose from the great pleistocene submergence about eight thousand to ten thousand years ago, and the second continental period with its forests and its teeming and widely-extended animal and human life, may have been established within two thousand years of that time, or say six thousand to eight thousand years ago. How long the second continental or palanthropic period continued intact we do not know, but we can scarcely allow it less than two thousand years. Perhaps it was considerably longer. Now on historical evidence produced by Egypt, Chaldea, and other ancient countries in the Mediterranean region, we can trace the neanthropic age continuously back to, say, three thousand years B.C., or nearly five thousand years in all. Adding to this two thousand years for the palanthropic age, we are carried back to a time within one thousand years of the earliest we can assign on geological grounds to the termination of the great glacial period. Therefore, unless we suppose the last continental subsidence to have begun some time before the close of the palanthropic age, and to have continued to some degree into the beginning of the neanthropic, we cannot assign to it a very long time. That it could not have been sudden in the sense of being instantaneous is evident, because in that case terrestrial denudation of a stupendous character must have ensued, and no animal life except that of mountain tops and elevated table-lands could have escaped its destructive effects, but that it was by no means secular or long-continued is certain.
Thus we seem shut up to the conclusion that the close of the palanthropic age was marked by great geological vicissitudes of the character of submergence, leading primarily to vast destruction of animal life, and secondarily to permanent changes both in geography and climate, under which new conditions the neanthropic age was inaugurated. How this took place we have to inquire in the sequel. In the meantime we may merely remark that since the two principal races of primitive men known to us in Europe seem to have perished, we must infer that individuals of a third race beyond the limits of Europe were destined to survive, and again to replenish the earth in the new era, and that possibly these may be represented by the solitary Truchère skull. In the case of many of the more bulky and unwieldy animals inhabiting the plains the case was different. They perished, or if any survived the submergence they were unable to multiply under the new conditions.
Desperate attempts have been made in the interests of extreme uniformitarianism to discredit the abrupt change from palæocosmic to neocosmic men. It has been supposed that the latter replaced the former as conquerors—a most unlikely theory, when their relative powers are considered. It has been conjectured that as the cold decreased the old races of men followed the reindeer to the north and became Arctic peoples. But why did they not rather attack the new animals, which in that case must have come in from the south? It has even been supposed that the Esquimaux may be their descendants; but they are quite different in physical characters, and have no nearer resemblance in their arts than other rude peoples. In opposition to all this we have not only the remarkable change in the races of men and in their animal associates, but when we know that the whole geographical features of our continents have changed since the palanthropic age, and that not only are our continents reduced in size since the continental post-glacial period, but that there is evidence of re-elevation as well as subsidence, and this within a short period—say eight thousand years less the historic period on the one hand and the early palanthropic on the other—it seems impossible to doubt the greatness and suddenness of the physical break that divides the anthropic age into two distinct portions. All this may be held to be certainly known as geological fact, and it would be folly to overlook it in any discussions as to primitive man, or in any comparisons of the evidence afforded by his remains with that of early human history or tradition.
But if man was a witness of and sufferer in this great catastrophe, and if any men survived it, did they preserve no tradition or memory of such a stupendous event? We may imagine this to be possible. The survivors may have belonged to the rudest and most isolated of the races of men, and may have had no means of knowing the extent of the disaster or of preserving its memory. On the other hand, they may have attained to a sufficient degree of culture to have had some means of perpetuating the memory of great events. If so, we may imagine that the great diluvial cataclysm which separates the human or anthropic period into two parts may have left an indelible mark in the history or tradition of mankind. We shall inquire into this in the sequel, but must first consider what geological monuments remain of the early neanthropic age in Europe. [27]
[27] A valuable paper by Dawkins 'On the relation of the Palæolithic to the Neolithic Period,' reaches me when correcting the proof of this volume. (Reprint from Journal of Anthropological Society, February 1894.)
In the meantime I may remark that, if we take the Canstadt people to represent the ruder tribes of the antediluvian Cainites, the feebler folk of Truchère to represent the Sethites, and the giant race of Cro-magnon and Mentone as the equivalent of the 'mighty men' or Nephelim of Genesis who arose from the mixture of the two original stocks, we shall have a somewhat exact parallel between the men of the caves and gravels and those we have so long been familiar with in the Book of Genesis.
THE EARLY NEANTHROPIC AGE