Crookes' Theory.--Sir William Crookes, at a meeting of the British Association for the Advancement of Science about ten years ago, in discussing telepathy, directed attention to the fact that there exists by scientific hypothesis, generally accepted, a definite medium of communication by which minds at a distance might influence one another. The medium is the ether which, according to physical theories, besides carrying light, also carries heat and electrical waves, and in recent years is recognized as transmitting the impulses of wireless telegraphy. It is possible that when the cells of certain human minds are stimulated to a particular phase of vibration, they may, even at long distances, affect the cells of other individuals that resemble them, or are attuned to them, that is, have the same moment of vibration. This is the principle which underlies wireless telegraphy. Whether the vibrations of living nerve cells can be made thus to radiate out over the ether and arouse in any way other cells, especially to the extent of communicating ideas, is a matter still open for investigation. The possibility of this occurring {143} cannot be denied. We are, however, still in the presence of a condition and not a theory. The question is whether minds are thus influenced at a distance--whether we have data enough to establish the occurrence of telepathy or mental communications of any kind at a distance. No Practical Thought Transfer.--At the beginning, it is of the greatest importance to recall that, while many people think there must be something in telepathy and presume that the investigations of recent years have shown not only the possibility of the communication of ideas from mind to mind and of the mental influence of one person over another, even at long distances, but also its actual occurrence, yet all our ordinary life is founded on the absolute negation of any such phenomenon. For instance, our courts of law are conducted in direct contradiction of the possibility of anything like telepathy. Juries are summoned of twelve good men and true who, as far as possible, know nothing about the prisoner and as little as may be about the case. They are supposed to get all their information in the court room. We do not believe that any of them by any wonderful process might be able to know what was going on in the prisoner's mind in spite of his plea. Nor do we think for a moment that they can know what is going on, apart from what he communicates in evidence, in the mind of any witness. Neither is there the slightest presumption that the judge or any of our lawyers can know anything about what is in the minds of any of the persons present, except as they reveal it by outward signs. A lawyer who could employ telepathy with success would be simply invaluable. Before a month had passed, he would have all the business of the criminal courts in his hands.