[40] Reference may be made to the _Upanishads_ (“Sacred books of the East,” vols. i. and xv.); to the _Bhagavat Gita_; to R. M. Bucke’s _Cosmic Consciousness_ (Purdy Publishing Co., Chicago); to the _Raja Yoga Lectures_, by Vivekananda (New York, 1899); to the _Ancient Wisdom_, by Annie Besant; _The Art of Creation_, and _A Visit to a Gnani_, by E. Carpenter; and to many other works, of course. [41] If I seem here to personify unduly these psychic elements and to ascribe to them too much in the way of consciousness and intelligence, I must refer for explanation to the Note at the end of this chapter. [42] See ch. vii., _infra_, p. 119. [43] See _The Art of Creation_, ch, xii. pp. 209, 210. [44] _Human Personality_, &c., ch. vi. [45] _Ibid._ p. 196, edition 1909, edited by L. H. Myers. [46] For evidence on the subject of Phantasms, Wraiths, Haunted Houses, and so forth, see _Phantoms of the Living_, by Gurney, Myers, and Podmore; and _The Report on the Census of Hallucinations_, Proceedings of the Psychical Research Society, vol. x.; also _L’inconnu et les problems psychiques_, by Camille Flammarion; and Lombroso’s chapter on Haunted Houses, in his book _Fenomeni Ipnotici e Spiritici_ (Turin, 1909), ch. xii.; also ch. viii. of the present book, _infra_. [47] See Carrington and Meader, _op. cit._ pp. 318–27. [48] Dr. Morton Prince’s study, _The Dissolution of a Personality_ (Longmans, 1906), should be read, as going deeply into the whole subject. He suggests (p. 530) the use of the word “co-consciousness,” to indicate the secondary chains of mental operation which coexist side by side with or beneath the primary. Dr. R. Assagioli, in his pamphlet _Il Subcosciente_ (Florence, 1911), also follows the same line. [49] _De Rerum Natura_, iii. 890, translated by Mr. H. S. Salt. [50] See Geddes and Thomson, _Evolution of Sex_ (1901), p. 275. [51] See ch. ii. p. 18, _supra_; also, for amplification of this view, Myers’s _Human Personality_, _op. cit._, edition 1909, pp. 90, 91. [52] _The Story of My Life_, by Helen Keller (1908), p. 17. [53] For a further account of the subliminal or underlying self, see next chapter.