Reverting to the “mould’ring heap” of which Gray sings in his _Elegy_, it may fairly be asked why the mound should be long and not round. A decisive answer cannot be tendered. It is worth considering, nevertheless, whether this shape does not represent a “throw-back” to Neolithic custom. The round barrows which fell under the Christian ban enclosed the relics of burnt or partially burnt bodies. The long barrows, which, with some possible exceptions[651], are believed to be of earlier date, were raised over corpses which had not been cremated. Now, if it be true, as Mr Grant Allen supposed, that the shape of the circular tumulus was determined by the cinerary urn around which it was piled, while the form of the long barrow depended on the subjacent chambered tomb--the underground home or palace of the dead person[652]--we begin to see a glimmer of light. For the subterranean chamber, being intended to hold an uncremated corpse, would be roughly adapted to the form of the human body. In like manner, when inhumation was again enforced, there would be an unconscious return to the use of the long mound. As if to show once more that no rule is of universal application, certain exceptions must be recorded. In some village churchyards, a few round mounds are interspersed with the long ones. Occasionally, the round mounds may be explained by the division of a long mound caused by the tread of careless feet, repeated throughout several generations. That this is not always the reason, is plain to the observant eye. Do these mounds represent the graves of children, or of unbaptized infants? On the Sussex coast, the graves of drowned sailors are said to be thus distinguished. Once again, why should it be customary, as in some churchyards of Dorsetshire and the Isle of Wight, to make the long mounds of unusual size? A fact of some little interest, though it has no scientific bearing on our theme, is that the late Professor Tyndall’s grave, in Haslemere churchyard, Surrey, is a round tumulus, clad with bracken and heather. The memorial took this unpretentious form in accordance with the expressed wish of the philosopher himself. Through the kindness of Miss Truda Hutchinson, I am enabled to give an illustration (Fig. 51) of the mound. For the purpose of comparison, a round barrow situated at Henley-on-Thames is shown (Fig. 52). [Illustration: FIG. 51. Tyndall’s grave, Haslemere churchyard, Surrey. A modern round barrow.] We have seen that orientation, as we know it, was not strictly observed in the burials of prehistoric folk, while, in our day, it is all but universal. Contrariwise, what was originally a common feature--the placing of the corpse in a crouched or sitting posture--is now decidedly exceptional, being restricted to the [Illustration: FIG. 52. Round barrow, Henley-on-Thames, Oxfordshire.]