The best and most valid proof that an abnormal being is actually present was that devised by the ghost of Sir Richard of Coldinghame in the ballad, and by the Beresford ghost, who threw a heavy curtain over the bed-pole. Unluckily, Sir Richard is a poetical figment, and the Beresford ghost is a myth, like William Tell: he may be traced back through various mediaeval authorities almost to the date of the Norman Conquest. We have examined the story in a little book of folklore, Etudes Traditionistes. Always there is a compact to appear, always the ghost burns or injures the hand or wrist of the spectator. A version occurs in William of Malmesbury.
What we need, to prove a ghost, and disprove an exclusively telepathic theory, is a ghost who is not only seen, heard, or even touched, but a ghost who produces some change in physical objects. Most provokingly, there are agencies at every successful seance, and in every affair of the Poltergeist, who do lift tables, chairs, beds, bookcases, candles, and so forth, while others play accordions. But then nobody or not everybody sees these agencies at work, while the spontaneous phantasms which are seen do not so much as lift a loo-table, generally speaking. In the spiritualistic cases, we have the effect, with no visible cause; in ghost stories, we have the visible presence, but he very seldom indeed causes any physical change in any object. No ghost who does not do this has any strict legal claim to be regarded as other than a telepathic hallucination at best, though, as we shall see, some presumptions exist in favour of some ghosts being real entities.


