Mr. Beattie has been so good as to send me for examination a complete set of these most extraordinary photographs, thirty-two in number, and has furnished me with any particulars I desired. I have described them as correctly as I am able; and Dr. Thomson has authorized me to use his name as confirming Mr. Beattie’s account of the conditions under which they appeared. These experiments were not made without labor and perseverance. Sometimes twenty consecutive pictures produced absolutely nothing unusual. Hundreds have been taken, and more than half have been complete failures. But the successes have been well worth the labor. They demonstrate the fact that what a medium or sensitive sees (even where no one else sees anything) may often have an objective existence. They teach us that perhaps the bookseller, Nicolai, of Berlin—whose case has been quoted _ad nauseam_ as the type of a “spectral illusion”—saw real beings after all; and that, had photography been then discovered and properly applied, we might now have the portraits of the invisible men and women who crowded his room. They give us hints of a process by which the figures seen at séances may have to be gradually formed or developed, and enable us better to understand the statements repeatedly made by the communicating intelligences, that it is very difficult to produce definite, visible and tangible forms, and that it can only be done under a rare combination of favorable conditions. We find, then, that three amateur photographers, working independently in different parts of England, separately confirm the fact of spirit-photography—already demonstrated to the satisfaction of many who had tested it through professional photographers. The experiments of Mr. Beattie and Dr. Thomson are alone absolutely conclusive; and, taken in connection with those of Mr. Slater and Dr. Williams, and the test photographs, like those of Mrs. Guppy, establish as a scientific fact the objective existence of invisible human forms and definite invisible actinic images. Before leaving the photographic phenomena we have to notice two curious points in connection with them. The actinic action of the spirit-forms is peculiar, and much more rapid than that of the light reflected from ordinary material forms; for the figures start out the moment the developing fluid touches them, while the figure of the sitter appears much later. Mr. Beattie noticed this throughout his experiments, and I was myself much struck with it when watching the development of three pictures recently taken at Mr. Hudson’s. The second figure, though by no means bright, always came out long before any other part of the picture. The other singular thing is, the copious drapery in which these forms are almost always enveloped, so as to show only just what is necessary for recognition of the face and figure. The explanation given of this is, that the human form is more difficult to materialize than drapery.