The phenomenon of haunted houses resembles that of the phantasms of the dead, except that here the ghost clings to the residence, the house, the building and in no way to the persons who inhabit it. By the second year of its existence, that is to say, 1884, the Committee on Haunted Houses of the S. P. R. had selected and made an analysis of some sixty-five cases out of hundreds submitted to it, twenty-eight of which rested upon first-hand and superior evidence.[1] It is worthy of remark, in the first place, that these authentic narratives bear no relation whatever to the legendary and sensational ghost-stories that still linger in many English and American magazines, especially in the Christmas numbers. They mention no winding-sheets, coffins, skeletons, graveyards, no sulphurous flames, curses, blood-curdling groans, no clanking chains, nor any of the time-honoured trappings that characterize this rather feeble literature of the supernatural. On the contrary, the scenes enacted in houses that appear to be really haunted are generally very simple and insignificant, not to say dull and commonplace. The ghosts are quite unpretentious and go to no expense in the matter of staging or costume. They are clad as they were when, sometimes many years ago, they led their quiet, unadventurous life within their own home. We find in one case an old woman, with a thin grey shawl meekly folded over her breast, who bends at night over the sleeping occupants of her old home, or who is frequently encountered in the hall or on the stairs, silent, mysterious, a little grim. Or else it is the gentleman with a lacklustre eye and a figured dressing-gown who walks along a passage brilliantly illuminated with an inexplicable light. Or again we have another elderly lady, dressed in black, who is often found seated in the bay window of her drawing-room. When spoken to, she rises and seems on the point of replying, but says nothing. When pursued or met in a corner, she eludes all contact and vanishes. Strings are fastened across the staircase with glue; she passes and the strings remain as they were. The ghost--and this happens in the majority of cases--is seen by all the people staying in the house: relatives, friends, old servants and new. Can it be a matter of suggestion, of collective hallucination? At any rate, strangers, visitors who have had nothing said to them, see it as the others do and ask, innocently: "Who is the lady in mourning whom I met in the dining-room?" [1] Proceedings, vol. i., pp. 101-115; vol. ii., pp. 137-151; vol. viii., pp. 311, 332, etc. If it is a case of collective suggestion, we should have to admit that it is a subconscious suggestion emitted without the knowledge of the participants, which indeed is quite possible.