To Ray Lankester, however, it seemed a clear case of fraud, and he wrote a letter to THE TIMES* denouncing Slade, and also prosecuted him for obtaining money under false pretences. Replies to Lankester's letter and supporting Slade were forthcoming from Dr, Alfred Russel Wallace, Professor Barrett, and others. Dr. Wallace pointed out that Professor Lankester's account of what happened was so completely unlike what occurred during his own visit to the medium, as well as the recorded experience of Serjeant Cox, Dr. Carter Blake, and many others, that he could only look upon it as a striking example of Dr. Carpenter's theory of preconceived ideas, He says: "Professor Lankester went with the firm conviction that all he was going to see would be imposture, and he believes he saw imposture accordingly." Professor Lankester showed his bias when, referring to the paper read before the British Association on September 12 by Professor Barrett, in which he dealt with Spiritualistic phenomena, he said, in his letter to THE TIMES: "The discussions of the British Association have been degraded by the introduction of Spiritualism."
* September 16, 1876.
Professor Barrett wrote that Slade had a ready reply, based on his ignorance of when the writing did actually occur. He describes a very evidential sitting he had in which the slate rested on the table with his elbow resting on it. One of Slade's hands was held by him, and the fingers of the medium's other hand rested lightly on the surface of the slate. In this way writing occurred on the under surface of the slate. Professor Barrett further speaks of an eminent scientific friend who obtained writing on a clean slate when it was held entirely by him, both of the medium's hands being on the table. Such instances must surely seem absolutely conclusive to the unbiased reader, and it will be clear that if the positive is firmly established, occasional allegations of negative have no bearing upon the general conclusion.
Slade's trial came on at Bow Street Police Court on October t, 1876, before Mr. Flowers, the magistrate. Mr. George Lewis prosecuted and Mr. Munton appeared for the defence. Evidence in favour of the genuineness of Slade's mediumship was given by Dr. Alfred Russel Wallace, Serjeant Cox, Dr. George Wyld, and one other, only four witnesses being allowed. The magistrate described the testimony as "overwhelming" as to the evidence for the phenomena, but in giving judgment he excluded everything but the evidence of Lankester and his friend Dr. Donkin, saying that he must base his decision on "inferences to be drawn from the known course of nature." A statement made by Mr. Maskelyne, the well-known conjurer, that the table used by Slade was a trick-table was disproved by the evidence of the workman who made it. This table can now be seen at the offices of the London Spiritualist Alliance, and one marvels at the audacity of a witness who could imperil another man's liberty by so false a statement, which must have powerfully affected the course of the trial. Indeed, in the face of the evidence of Ray Lankester, Donkin, and Maskelyne, it is hard to see how Mr. Flowers could fail to convict, for he would say with truth and reason, "What is before the Court is not what has happened upon other occasions-however convincing these eminent witnesses may be-but what occurred upon this particular occasion, and here we have two witnesses on one side and only the prisoner on the other." The "trick-table" probably settled the matter.
Slade was sentenced, under the Vagrancy Act, to three months' imprisonment with hard labour. An appeal was lodged and he was released on bail. When the appeal came to be heard, the conviction was quashed on a technical point. It may be pointed out that though he escaped on a technical point, namely, that the words "by palmistry or otherwise" which appeared in the statute had been omitted, it must not be assumed that had the technical point failed he might not have escaped on the merits of his case. Slade, whose health had been seriously affected by the strain of the trial, left England for the Continent a day or two later.