We see what brilliantly colored creations tradition and fiction have woven about the magic mirror. It is now the duty of science to cull from these shining husks, by sober investigation, the kernels of truth; and that, it will be seen, can be done only by experiment. Unfortunately I myself am unable to report any successful experiments; for, despite repeated attempts, I have been unsuccessful in obtaining any images whatever from mirrors, or crystals, or reflecting surfaces of any kind. Similarly several members of the Berlin Society of Experimental Psychology have only had exclusively negative results to recount. But on the other hand, a member of the English Society for Psychical Research has been enabled to report a great number of pertinent observations. And although to my regret I am not permitted to publish the name of the lady[29] in question, yet every doubt as to the truth of her utterances is excluded, and the material she has furnished forms a valuable enrichment of psychological literature. I shall, accordingly, collect from the communications of this lady, who is a friend of Professor and Mrs. Henry Sidgwick, several cases which appear to me especially adapted to throw light upon the nature of the strange phenomena we are examining. [29] I afterwards received permission to publish her name: it is Miss A. Goodrich of London. The lady made more than seventy experiments of her own, of which—a fact of the greatest value for passing upon their exactness—she always made notes at once, or at the most never more than an hour afterwards. She employed various means for the production of the hallucinations. At first she used the colored balls that are hung upon Christmas trees, or the back of a gold watch; but it turned out that both these objects tried the eyes by their strong brilliancy and grotesquely distorted the visions that were evoked. A glass filled with water proved to be inconvenient to handle, especially in the dark; while mirrors also possessed many disturbing peculiarities. A magnifying glass set on a dark background proved to be very effective, especially by daylight; as did also a black-framed photograph placed upon the wall of the room opposite the light. The gaze and the attention, however, were best concentrated upon a well-polished rock-crystal. The method of procedure—since happily all the appurtenances of mysticism were discarded—was very simple. The lady draped the crystal in black, placed it where none of the surrounding objects could be reflected in it, and waited for whatever might happen. What occurred? The simplest instance is perhaps No. 7, which we here introduce: