As far as the nature and scope of this little work will allow, I have sought to treat the subject on a broad and general basis rather than pursue more particular and possibly more attractive scientific lines. What I have here said is the result of a personal experience of some years in this and other forms of psychic development and experimentation. My conclusions are given for what they are worth, and I have no wish to persuade my readers to my view of the nature and source of these abnormal phenomena. The reader is at liberty to form his own theory in regard to them, but such theory should be inclusive of all the known facts. The theories depending on hypnotic suggestion may be dismissed as inadequate. There appear to remain only the inspirational theory of direct revelation and the theory of the world-soul enunciated by the Occultists. I have elected in favour of the latter for reasons which, I think, will be conspicuous to those who read these pages. I should be the last to allow the study of psychism to usurp the legitimate place in life of intellectual and spiritual pursuits, and I look with abhorrence upon the flippant use made of the psychic faculties by a certain class of pseudo-occultists who serve up this kind of thing with their five o'clock tea. But I regard an ordered psychism as a most valuable accessory to intellectual and spiritual development and as filling a natural place in the process of unfoldment between that intellectualism that is grounded in the senses and that higher intelligence which receives its light from within. From this view-point the following pages are written, and will, I trust, prove helpful. CHAPTER I. THE SCIENTIFIC POSITION