In the case of the psychics, they are, of course, delineated exactly as they appeared to me, although I have concealed their real names and places of residence. Mrs. Smiley, Whose admirable patience under investigation makes her an almost ideal sub ject, is the chief figure among my mediums, and I have tried to give her attitude toward us and toward her faith as she expressed it in our sittings, although the conversation is necessarily a mixture of imagination and memory. Mrs. Hartley is a very real and vigorous character — a professional psychic, it is true, but a woman of intelligence and power. Those in private life I have guarded with scrupulous care, and I am sure that none of them, either private or professional, will feel that I have wilfully misrepresented What took place. My aim throughout has been to deal directly and simply with the facts involved.