This unfinished preface consists of several passages written at different times by the author, who died on January 17th, 1901. In 1896, he arranged that the completion of his book should be in the hands of Dr. Richard Hodgson in case of his death before its publication. In the meantime he had entrusted the general supervision of the press work and much of the detail in marshalling the Appendices to Miss Alice Johnson of Newnham College, Cambridge, who has therefore been associated with Dr. Hodgson also in the editorial work needed for the completion of the book, and much the greater part of the labour involved has fallen to her share. At the time of the author's death, Chapters I.-VI., part of Chapter VII (Phantasms Of The Dead)., and the whole of Chapter VIII (Motor Automatism). were in the first proof, the rest of Chapter VII (Phantasms Of The Dead). and Chapter X (Epilogue). were ready for printing. Most of the Appendices were in type, but required much revision and re-arrangement. The substance of nearly all Chapter IX (Trance, Possession And Ecstasy). had been written, in one form or another, but had to be pieced together. The asterisks on p. 209 (Vol. II.) mark the end of the part which had been consecutively composed by the author. Some of the questions involved in that chapter would doubtless have been treated much more fully by him had he lived to complete it.

Mr. Myers left on record his wish to express gratitude to Mr. F. N. Hales, of Trinity College, Cambridge, for help in the preparation of some Appendices, especially in Chapters II. and V.

Richard Hodgson. Alice Johnson.