Sir Oliver Lodge himself appears to believe that he was actually in communication, through Mrs. Piper, with his dead Uncle Jerry; and by spiritists generally this is alluded to as a characteristic instance impossible of explanation on the theory of telepathy between living minds. But it is pertinent to point out that possibly, in his childhood, Sir Oliver may have heard his uncles, in some moment of reminiscence, discussing these very incidents. He would naturally have forgotten the episode, so far as conscious recollection of it was concerned; but he would none the less have retained some memory of their conversation in his subconsciousness, whence Mrs. Piper could have gained knowledge of it telepathically. And, even had he never heard of the incidents, they might indeed have been transmitted to him telepathically from the surviving uncles, and been by him retransmitted to Mrs. Piper. This last possibility, involving as it does telepathy between more than two persons, may seem to be far-fetched. But there is plenty of evidence that telepathy of this sort--known technically as _telepathie à trois_--is an actuality. I have in mind one particularly interesting case studied by Mr. Andrew Lang, the brilliant essayist and psychical researcher. It concerns a crystal-gazer named Miss Angus. "Again and again," to give Mr. Lang's own words, "Miss Angus, sitting with man or woman, described acquaintances of theirs but not of hers, in situations not known to the sitters but proved to be true to fact. In one instance, Miss Angus described doings, from three weeks to a fortnight old, of people in India, people whom she had never seen or heard of, but who were known to her sitter. Her account, given on a Saturday, was corroborated by a letter from India, which arrived next day, Sunday. In another case she described--about ten P. M.--what a lady, not known to her, but the daughter of a matron present, who was not the sitter, had been doing about four P. M. on the same day. Again, sitting with a lady, Miss Angus described a singular set of scenes much in the mind, not of her sitter, but of a very unsympathetic stranger, who was reading a book at the other end of the room. "I have tried every hypothesis, normal and not so normal, to account for these and analogous performances of Miss Angus. There was, in the Indian and other cases, no physical possibility of collusion; chance coincidence did not seem adequate; ghosts were out of the question, so was direct clairvoyance. Nothing remained for the speculative theorizer but the idea of cross currents of telepathy between Miss Angus, a casual stranger, the sitters, and people far away, known to the sitters or the stranger, but unknown to Miss Angus.