Hence it may suffice here to merely call attention to the great simplicity introduced into this vast complexity of the glacialists, by the positive assurance of this author that the "Drift period" and the Pleistocene =end together=, and join onto the modern; or perhaps I ought rather to say that the so-called Glacial phenomena lie in between the true fossil world and our modern one. "Thus, in regard to the Pleistocene mammals, the view is now generally accepted that, in every place where they have been found in a contemporary bed, that bed underlies the till, and is therefore pre-glacial. As in other places, so here (Scotland), teeth and bones of mammals have occurred in the clay itself; but in all such cases they occur sporadically and as boulders. As Mr. James Geikie says, 'They almost invariably afford marks of having been subjected to the same action as the stones and boulders by which they are surrounded; that is to say, they are rubbed, ground, striated, and smoothed.'"[77] And again: "=The Pleistocene fauna, so far as I know, came to an end with the so-called Glacial age.=" (Id. p. 463.) From a recent notice in _Nature_[78] it would seem that even Dr. H. Woodward, of the British Museum, supports this general view in his "Table of British Strata," by the statement that the glacial deposits contain =only derived fossils=. But this is such a decided simplification of the problem of climate that I am utterly at a loss to understand how any one can still cling to the complex and highly artificial arrangement of numerous "interglacial" periods, to account for a few bones of mammals or a few pockets of lignite; and how they can even place between the "Glacial period" and our times the "genial Champlain period," with it, as Dana says, "=abruptly terminated=," and becoming "=suddenly= extreme as of a single winter's night." Howorth, in the latter part of the chapter already quoted from (pp. 460-478), gives a good review of this subject of intermittent climates, and strongly supports his contention that the =stratigraphical evidence= all points to the fact that the Pleistocene forms are always older than the Drift-beds, and where the flora and fauna of the Pleistocene occur in the Drift, they do so only as boulders; that, in fact, as he says in his Preface, "The Pleistocene Flood ... =forms a great dividing line= in the superficial deposits," separating the true fossil world from the modern.