This book would seem to be a labour of love since it is hard to believe that it fulfils a widespread demand. The book takes the form of a dictionary, or rather encyclopædia, in which a large number of individual cross-references are interspersed among a number of signed articles. The editor has written seventeen out of the twenty-one sections, including the chapter on psycho-therapy and psychic phenomena. There are a great many references to psycho-analytical works, especially to the reviewer's writings on occult themes in his 'On the Nightmare'. A short but not inadequate account is given of Freud's work. Examples of the principal contents are astrology, devil-worship, fairies, spiritualism, white magic and literature of the occult.