PSYCHO-PHYSICAL PHENOMENA 487 



and endeavours to give some explanation of the mysterious 

 problems of heredity or the power of reproduction and evolution 

 manifested by living substance, and of the different states of con- 

 sciousness and subconsciousness, he readily admits that they are 

 inexplicable by the laws of atomic and molecular mechanics, and 

 feels the necessity of confronting materialism by vitalism. 



Both materialism, or the atomistic hypothesis, and vitalism, 

 the hypothesis of vital or psychical energy, must continue to 

 function as indispensable vehicles, as the necessary poles of future 

 physiological discovery. 



" The evolutionary process of physiological science," as we said 

 in the Introduction to Vol. I. of this work, " has always been in 

 the past, and will always be in the future, a continuous and 

 fruitful struggle between the two opposite tendencies of material- 

 ism and vitalism." Both are one-sided; each reflects only one 

 aspect of the Real. The complete Theory of Life must be the 

 result of their interpenetration and fusion. 



BIBLIOGRAPHY - 



General Orientation in Psycho-physical Phenomena : 



W. JAMES. Principles of Psychology. 1890. 



H. EBBINGHAUS. Grundziige der Psychologic. Leipzig, 1902. 



H. HOFFDING. Esquisse d'une psychologic fondee sur 1'experience. Paris, 1909. 



A. LEHMANN. Grundziige der Psychophysiologie. Leipzig, 1912. 



The most important publications of recent date on different states of Conscious- 

 ness are cited at the end of an article by R. ASSAGIOLI, " II subcosciente," Rivista 

 di Filosofia, iii., 1911. 



The following in particular should be consulted : 



A. HERZEN. II mo to psichico e la coscienza. Florence, 1879. 



CH. RIBOT. Les Maladies de la memoire. Paris, Alcan, 1881. 



CH. RIBOT. Les Maladies de la personnalite. Paris, Alcan, 1883. 



CH. RIBOT. Deux etudes recentes sur le subconscient. Revue philosophique, 1907. 



F. AZAM. Hypnotisme, double conscience et alterations de la personnalite. Paris, 



Bailliere, 1887. 



F. AZAM. Journal of Abnormal Psychology, iii., 1898. 

 F. AZAM. Ibidem, iii., 1908-1909. 

 A. BINET. Double Consciousness. Monist, 1891. 

 A. BINET. Les Alterations de la personnalite. Paris, Alcan, 1892. 

 MAX DESSOIR. Das Doppel-Ich. Leipzig, 1896. 

 MAX DESSOIR. Das Unterbewussten. Geneva, Kiindig, 1910. 

 BORIS SIDIS. The Psychology of Suggestion. New York, Appleton, 1898. 

 BORIS SIDIS. Studies in Mental Dissociation. New York, Stechert, 1902. 

 BORIS SIDIS and GOODHART. Multiple Personality. London, Appleton, 1905. 

 BORIS SIDIS. The Nature of the Subconscious. Proc. Soc. for Psychical Research, 



1912, xxvi. 319. 

 F. W. H. MYERS. Human Personality and its Survival of Bodily Death. London, 



Longmans, Green jfe Co., 1902. 



GUSTAVE GELEY. L'Etre subconscient. Paris, Alcan, 1905. 

 E. BLEULER. Bewusstsein und Association. Leipzig, Earth, 1906. 

 A. ALLIOTTA. Atti del V Congresso intern, di psicologia. Rome, 1906. 

 MILLER FARNK. Archives de psychologie, v., 1906. 

 FR. DEL GRECO. II manicomio, 1906, 



