Again, while it is evident from the parallel striation on some of the fragments, on which the traces of glaze still remain, that they were manufactured on the wheel, an inspection of Figs. 160, 161, and 181, proves that hand-wrought vessels were also manufactured after the introduction of glaze. That sepulchral urns were all made by hand is not a sufficient proof that the wheel was not simultaneously in use among the same people. The extraordinary conservatism, as regards changes in religious ceremonies, displayed by all nations and in all ages, is a sufficient explanation of the persistency with which the hand-wrought vessels have continued in use for sepulchral purposes. Hence, I can conceive that to substitute for the latter others made on the wheel, though at the same time largely used for domestic purposes, would have been an intolerable innovation on the religious customs of the people. The Rev. Canon Greenwell, F.R.S., in discussing the question whether the various early sepulchral vessels were especially made for the purposes of burial, or were originally manufactured for domestic use, thus writes:-- "But perhaps the strongest objection to their having fulfilled a purpose in the household, is the fact that they possess but little in common with the pottery which, without much doubt, is domestic. It is true that not very much of this has been discovered, but quite enough has been found to enable us to judge pretty accurately of its character. It has not, indeed, been proved conclusively that the people who occupied the hut-circles and pit-dwellings were those who erected the barrows so often met with in close proximity to them; but if we may judge, as I think we fairly may, from the identity of the flint implements found in each, there can be little doubt that they were, the one the dwelling-place, the other the burial-place, of the same people. Now, the pottery which has been discovered on the site of dwelling-places is a dark-coloured, hard-baked, perfectly plain ware, without ornament of any kind, is in fact just what we would expect domestic pottery to be, and has nothing in which it resembles the sepulchral vessels. And more than this, so far as I know of my own experience, or can learn from that of others, no whole vessel, or even fragments, of the ordinary sepulchral pottery of the barrows or other places of sepulture has ever been met with in connection with places of habitation."--(_British Barrows_, p. 106.)