It is not, however, merely a question of “mediums.” Telepathy is important throughout the whole range of communication with the spirit-world. Whenever and wherever a soul--whether still invested with a human body or discarnate--is thinking, it is affecting the X and thereby rendering it possible for other souls to be impressed with the thoughts. For the most part the phenomena are of so faint a character and the minds to be communicated with so “untuned” that the incipient telepathy remains unnoticed and disregarded; but occasionally it commands attention. This view of the case is borne out by ample evidence. Second-sight, dreams, presentiments, “inspiration,” and such mental impulses as are commonly considered inexplicable are undoubted facts that fall within the scope of telepathy. In saying this it is not asserted that the phenomena in question are always real. They are frequently delusions due to an overwrought nervous system, to cerebral disorder or to emotional disturbance; but in other cases they are as actual and genuine as the common occurrences of human life. Turning, now, to tele-mnemoniky, or “memory-reading,” it is to be remarked that although everyone is familiar with the fact that memory exists, and though everyone quite understands the signification of the word, no one as yet has succeeded in giving even a rudimentary explanation of the faculty of remembrance. The most eminent psychologists have found the matter to be quite beyond the limits of their understanding; as indeed is essentially the case with every faculty of the soul, and--it may be added--with every attribute of matter. The old saying remains as true as ever: “A child can ask questions which a wise man cannot answer.” For practical purposes, however, partial knowledge suffices. Thus the existence of memory as a faculty of the soul is known, and it is also known that this implies the possession by each soul of a store of information. Whatever may be the nature of the storehouse, the doors can be opened and the information set free or rendered subject to inspection. It is conceivable, therefore, that a soul other than the memory-owner may under certain unknown conditions have access to the store. This is what is meant by tele-mnemoniky--the state of things that exists when not only current thoughts but also the accumulated knowledge resulting from past experience and observation are read by some outside soul. And as every memory contains much that is “pigeon-holed” and out of use for the time being, a very notable result is occasionally met with. Information is elicited as to facts and circumstances of which the person subjected to tele-mnemoniky is no longer conscious; and he, or she, becomes firmly and genuinely convinced that the particulars mentioned must have been derived from some supernormal source.