Another case, in which the senses affected were those of touch and hearing, has been given to us by Mr. Malleson. In 1874 or 1875 he went for a short sea voyage, taking with him his young son. On the night of his departure, while in a dreamy, half-conscious state, he imagined that his son had fallen overboard, and that he himself was bringing the sad news to his wife. On his return home he learned that on that night Mrs. Malleson had been awakened by feeling some one leaning over her. She put out her arm and, as she thought, touched her husband's coat. She had no doubt that it was her husband's bodily presence, spoke to him, and heard him answer, "Yes, I have come back." But on her continuing, "Where is Eddy?" she received no reply, and felt much alarmed. There are several instances recorded of tactile hallucinations accompanying visual and auditory phantasms.[120] FOOTNOTES: [Footnote 115: Mr. Tudor wrote to Dr. Hodgson in answer to a letter received from him.] [Footnote 116: _Annales des Sciences Psychiques_, July-August 1893, pp. 196, 197.] [Footnote 117: See, for instance, _Phantasms of the Living_, cases 28, 79, etc.] [Footnote 118: These letters will be found in full in the account of the case published in _Proc. S.P.R._, vol. x., part xxvi.] [Footnote 119: M. Aksakof explains that the name of the month (October) was omitted, through a mistake on the part of the telegraph clerk.] [Footnote 120: _Phantasms of the Living_, vol. i. pp. 434-445; vol. ii. p. 134, etc.; and _Proc. S.P.R._, etc.] CHAPTER XII. COLLECTIVE HALLUCINATIONS. We have now to discuss that numerous class of cases in which the phantasm was perceived by two or more persons. The difficulties of interpretation which such cases present are enhanced for us by the various defects to which the evidence is here peculiarly liable. Many so-called cases of collective apparition, especially when the figure is seen out-of-doors, were probably real men and women.[121] In others we have to deal with a collective illusion, a quasi-hallucinatory superstructure built up by each witness, aided by hints from the others, on a common sensory basis. Such, for instance, appears to us the most probable interpretation of the following singular case. From MRS. ALDERSON.