The Book of Dreams and Ghosts

In face of these difficulties mankind has gone on believing in dreams of all three classes: dreams revealing the unknown present, the unknown past, and the unknown future. The judicious reasonably set them all aside as the results of fortuitous coincidence, or revived recollection, or of the illusions of a false memory, or of imposture, conscious or unconscious. However, the stories continue to be told, and our business is with the stories. Taking, first, dreams of the unknown past, we find a large modern collection of these attributed to a lady named "Miss A---". They were waking dreams representing obscure incidents of the past, and were later corroborated by records in books, newspapers and manuscripts. But as these books and papers existed, and were known to exist, before the occurrence of the visions, it is obvious that the matter of the visions may have been derived from the books and so forth, or at least, a sceptic will vastly prefer this explanation. What we need is a dream or vision of the unknown past, corroborated by a document not known to exist at the time when the vision took place and was recorded. Probably there is no such instance, but the following tale, picturesque in itself, has a kind of shadow of the only satisfactory sort of corroboration. The author responsible for this yarn is Dr. Gregory, F.R.S., Professor of Chemistry in the University of Edinburgh. After studying for many years the real or alleged phenomena of what has been called mesmerism, or electro-biology, or hypnotism, Dr. Gregory published in 1851 his Letters to a Candid Inquirer on Animal Magnetism.