The onus of proof lay with those who made the assertions. If this gentleman, whose name is unfamiliar, claims that he can raise spirits, let him call one up now before a sane and unprejudiced audience. If he says that he receives messages, let him give us the news in advance of the general agencies. ("It has often been done!" from the Spiritualists.) So you say, but I deny it. I am too accustomed to your wild assertions to take them seriously. (Uproar, and Judge Gaverson upon his feet.) If he claims that he has higher inspiration, let him solve the Peckham Rye murder. If he is in touch with angelic beings, let him give us a philosophy which is higher than mortal mind can evolve. This false show of science, this camouflage of ignorance, this babble about ectoplasm and other mythical products of the psychic imagination was mere obscurantism, the bastard offspring of superstition and darkness. Wherever the matter was probed one came upon corruption and mental putrescence. Every medium was a deliberate impostor. ("You are a liar!" in a woman's voice from the neighbourhood of the Lindens.) The voices of the dead had uttered nothing but childish twaddle. The asylums were full of the supporters of the cult and would be fuller still if everyone had his due.
It was a violent but not an effective speech. Evidently the great man was rattled. He realized that there was a case to be met and that he had not provided himself with the material wherewith to meet it. Therefore he had taken refuge in angry words and sweeping assertions which can only be safely made when there is no antagonist present to take advantage of them. The Spiritualists seemed more amused than angry. The materialists fidgeted uneasily in their seats. Then James Smith rose for his last innings. He wore a mischievous smile. There was quiet menace in his whole bearing.
He must ask, he said, for a more scientific attitude from his illustrious opponent. It was an extraordinary fact that many scientific men, when their passions and prejudices were excited, showed a ludicrous disregard for all their own tenets. Of these tenets there was none more rigid than that a subject should be examined before it was condemned. We have seen of late years, in such matters as wireless or heavier-than-air machines, that the most unlikely things may come to pass. It is most dangerous to say a priori that a thing is impossible. Yet this was the error into which Professor Challenger had fallen. He had used the fame which he had rightly won in subjects which he had mastered in order to cast discredit upon a subject which he had not mastered. The fact that a man was a great physiologist and physicist did not in itself make him an authority upon psychic science.
It was perfectly clear that Professor Challenger had not read the standard works upon the subject on which he posed as an authority. Could he tell the audience what the name of Schrenck Notzing's medium was? He paused for a reply. Could he then tell the name of Dr. Crawford's medium? Not? Could he tell them who had been the subject of Professor Zollner's experiments at Leipzig? What, still silent? But these were the essential points of the discussion. He had hesitated to be personal, but the Professor's robust language called for corresponding frankness upon his part. Was the Professor aware that this ectoplasm which he derided had been examined lately by twenty German professors -- the names were here for reference -- and that all had testified to its existence? How could Professor Challenger deny that which these gentlemen asserted? Would he contend that they also were criminals or fools? The fact was that the Professor had come to this hall entirely ignorant of the facts and was now learning them for the first time. He clearly had no perception that Psychic Science had any laws whatever, or he would not have formulated such childish requests as that an ectoplasmic figure should manifest in full light upon this platform when every student was aware that ectoplasm was soluble in light. As to the Peckham Rye murder it had never been claimed that the angel world was an annexe to Scotland Yard.