He gave his farewell speech at the Enmore Spiritualist Church after attending a service there.
The Gutenberg Project has a free e-book by Sir Arthur :
The History of Spiritualism Vol II (1926)
which can be downloaded for free here:
http://gutenberg.net.au/ebooks03/0301061.txt"THE CAREER OF EUSAPIA PALLADINO The mediumship of Eusapia Palladino marks an important stage in the history of psychical research, because she was the first medium for physical phenomena to be examined by a large number of eminent men of science. The chief manifestations that occurred with her were the movement of objects without contact, the levitation of a table and other objects, the levitation of the medium, the appearance of materialized hands and faces, lights, and the playing of musical instruments without human contact. All these phenomena took place, as we have seen, at a much earlier date with the medium D. D. Home, but when Sir William Crookes invited his scientific brethren to come and examine them they declined. Now for the first time these strange facts were the subject of prolonged investigation by men of European reputation. Needless to say, these experimenters were at first sceptical in the highest degree, and so-called "tests" (those often silly precautions which may defeat the very object aimed at) were the order of the day. No medium in the whole world has been more rigidly tested than this one, and since she was able to convince the vast majority of her sitters, it is clear that her mediumship was of no ordinary type. It is little use pointing out that no psychic researcher should be admitted to the seance room without at least some elementary knowledge of the complexities of mediumship and the right conditions for its unfoldment, or without, for instance, an understanding of the basic truth that it is not the medium alone, but the sitters equally, who are factors in the success of the experiment. Not one scientific man in a thousand recognizes this, and the fact that Eusapia triumphed in spite of such a tremendous handicap is an eloquent tribute to her powers."
