Side by side, however, with these exalted aspirations, the old popular belief in a subterranean abode of souls survived under its very crudest forms; and here also modern explorations have brought to light very surprising evidence of the strength with which the grotesque idea of Charon the Stygian ferryman still kept its hold on the imagination of uneducated people. Originally peculiar to Greece, where it still exists under a slightly altered form, this superstition penetrated into the West at a comparatively early period. Thus in the tombs of Campania alone many hundred skeletons have been found with bronze coins in their mouths, placed there to pay their passage across the Styx; and explorations at Praeneste show that this custom reaches back to the middle of the fourth century B.C. We also learn from Lucian that, in his time, the old animistic beliefs were entertained to the extent of burning or burying the clothes, ornaments, and other appurtenances of deceased persons along with their bodies, under the idea that the owners required them for use in the other world; and it is to such deposits that our museums of classical antiquity owe the greater part of their contents.[369] When the belief in a future life assumes the form last mentioned, it is, as we have said, simply a survival of the most primitive animism, not testifying to any religious reaction at the time when it can be proved to have flourished. It is introduced in the present connexion merely to show what ideas were current among those classes to whose opinions Roman civilisation was gradually giving irresistible weight. How the minds of the richer and more educated classes were affected by this underlying stratum, is shown by the nature of the figured representations with which their last abodes were ornamented. Everyone has been made tolerably familiar with these through the sculptured sarcophagi preserved in our museums; but, from their symbolical character, the significance of the reliefs with which they are decorated is not obvious at first sight; and some of the mythical adventures thus embodied may have been wrought without any reference to the destination of the dark and narrow chamber which they enclosed, or may even have been intended to divert the imagination from sad thoughts by the luxuriance of rushing life and joy and victory which they displayed; but after making every possible deduction on this score, there remain many others offering a deeper source of consolation to the bereaved survivor by the pictured promise of future reunion with those whom he had loved and lost. One favourite subject is the visit of Diana to the sleeping Endymion, by which is clearly foreshadowed an awakening to divine felicity from the sleep of death. The rape of Proserpine, followed by her restoration to the upper world, conveys a similar intention; as also does the fate of Adonis, since he too was believed to have risen from the dead. The marriage of Bacchus