All was short, sharp, and decisive. The invisible operators knew exactly what they were going to do, and did it with promptitude and precision."*
* THE SPIRITUALIST, Vol. IX, p. 2.
Slade's first seance in England was given on July 15, 1876, to Mr. Charles Blackburn, a prominent Spiritualist, and Mr. W. H. Harrison, editor of THE SPIRITUALIST. In strong sunlight the medium and the two sitters occupied three sides of an ordinary table about four feet square. A vacant chair was placed at the fourth side. Slade put a tiny piece of pencil, about the size of a grain of wheat, upon a slate, and held the slate by one corner with one hand under the table flat against the leaf. Writing was heard on the slate, and on examination a short message was found to have been written. While this was taking place the four hands of the sitters and Slade's disengaged hands were clasped in the centre of the table. Mr. Blackburn's chair was moved four or five inches while he was sitting upon it, and no one but himself was touching it. The unoccupied chair at the fourth side of the table once jumped in the air, striking its seat against the under edge of the table. Twice a life-like hand passed in front of Mr. Blackburn while both Slade's hands were under observation. The medium held an accordion under the table, and while his other hand was in clear view on the table "Hone, Sweet Home" was played. Mr. Blackburn then held the accordion in the same way, when the instrument was drawn out strongly and one note sounded. While this occurred Slade's hands were on the table. Finally, the three present raised their hands a foot above the table, and it rose until it touched their hands. At another sitting on the same day a chair rose about four feet, when no one was touching it, and when Slade rested one hand on the top of Miss Blackburn's chair, she and the chair were raised about half a yard from the floor.
Mr. Stainton Moses thus describes an early sitting which he had with Slade:
A midday sun, hot enough to roast one, was pouring into the room; the table was uncovered; the medium sat with the whole of his body in full view; there was no human being present save myself and him. What conditions could be better? The raps were instantaneous and loud, as if made by the clenched fist of a powerful man. The slate-writing occurred under any suggested condition.
It came on a slate held by Dr. Slade and myself; on one held by myself alone in the corner of the table farthest from the medium; on a slate which I had myself brought with me, and which I held myself. The latter writing occupied some time in production, and the grating noise of the pencil in forming each word was distinctly audible. A chair opposite to me was raised some eighteen inches from the floor; my slate was taken out of my hand, and produced at the opposite side of the table, where neither Dr. Slade nor I could reach it; the accordion played all round and about me, while the doctor held it by the lower part, and finally, on a touch from his hand upon the back of my chair, I was levitated, chair and all, some inches.
Mr. Stainton Moses was himself a powerful medium, and this fact doubtless aided the conditions. He adds:
I have seen all these phenomena and many others several times before, but I never saw them occur rapidly and consecutively in broad daylight. The whole seance did not extend over more than half an hour, and no cessation of the phenomena occurred from first to last.*
* THE SPIRITUALIST, Vol. IX, p. 2.
All went well for six weeks, and London was full of curiosity as to the powers of Slade, when there came an awkward interruption.
Early in September, 1876, Professor Ray Lankester with Dr. Donkin had two sittings with Slade, and on the second occasion, seizing the slate, he found writing on it when none was supposed to have taken place. He was entirely without experience in psychic research, or he would have known that it is impossible to say at what moment writing occurs in such seances. Occasionally a whole sheet of writing seems to be precipitated in an instant, while at other times the author has clearly heard the pencil scratching along from line to line.