This was 'the Alcheringa time,' and existing rites are explained by 'ætiological myths,'stating how such or such a mummery, still practised, was originally practised in the Alcheringa. Nothing of the sort, of course, need have been the case, and such myths cannot tell us what the manners and customs of that dim age really were. Demeter was a woman of the Greek Alcheringa, and the Eleusinian rites were explained by the Greeks as originating in her Alcheringa adventures. But these obviously were invented purely to account for the rites themselves, not _vice versâ_. Now, among the Arunta the blacks of to-day are regarded as reincarnations of the Alcheringa fabulous ancestors. Each of these carried about (both men and women) churinga, the portable decorated stones. When an Alcheringite died, a rock or tree rose to mark the place, but his or her spirit 'remained in the churinga.' Plenty of churinga were dropped at different sites, and round these now hover the spirits associated with them. In one place is a crowd of wild cat ghosts; at another, a mob of frog or lizard or emu ghosts. These want to be reincarnated. Consequently, a woman who desires to have a baby goes to one of them (in Argyll she would slide down a cup-marked rock!), a woman who does _not_ want to have a baby keeps away. A child's totem is derived, not from father or mother, but from the totem of the ghosts at the place where the woman thinks she conceived it. When the baby is born her relations hunt the spot, and find for it the churinga left by the spirit which is reincarnated in it.