130 Primaeval Man in the Valley of the Lea. a white bark of a sixteenth of an inch in thickness. How much older, then, must this Palaeolithic implement be than the Neolithic flints from the same place. There is other evidence of the extreme antiquity of these things. They are all beneath the "trail" and "warp." Now the "trail" belongs to geological time, and the period of its deposition is so remote that one can only guess at its age in years. The newest Palaeolithic implements are every one beneath and older than the "trail"; how very much older, then, must be the oldest implements. The proofs that they are really older I have given. The tools of the later Palaeolithic period show a marked development of the hand in the makers, for the chippers of these later tools had learned to hold small instruments with the fingers—much as we now hold a small pen, pencil, or knife. From the rude and heavy bludgeon the men had advanced to beautiful oval and ovate forms, almost perfect in geometrical precision. The progress from the large and rude, to the extremely small and neat scraper, shows that the men had probably progressed in the art of dressing skins, and in every way did finer and neater things. That these men and women now wore necklaces, and possibly bracelets, seems proved by the fact of specimens of Coscinopora globularis, D'Orb., occurring with the natural orifice artificially enlarged. I have several specimens thus enlarged from a hoard of more than two hundred examples found together near Bedford. Mr. James Wyatt, F.G.S., noticed a similar fact, as recorded by him in the 'Geologist' for 1862, p. 234. These later Palaeolithic men lived in large and probably peaceful com- panies, and their living-places stretched in unbroken lines on the old river-banks. The "Palaeolithic Floors" are not little isolated patches, but places extending for many miles ; how large they are it is impossible to say, from paucity of excavations. They are not confined to the Valley of the Thames, but occur in many places. The newer implements and those of middle age are innate with, and have belonged to, the gravel from the first. The older implements are distinctly "derived," like the cretaceous