These movements must be conceived as purely motor phenomena, which correspond to the expression of the motor element in the presentation "write." This phenomenon is somewhat rare; generally single letters are first written, and what was said above of table-turning holds true of their combination into words and sentences. True mirror-writing is also observed here and there. In the majority of cases, and perhaps in all experiments with beginners who are not under some very special suggestion, the automatic writing is that of the subject. Occasionally its character may be greatly changed,[38] but this is secondary, and is always to be regarded as a symptom of the intruding synthesis of a subconscious personality. [Illustration: FIG. 3.] As stated, the patient's automatic writing never came to any very great development. In these experiments, generally carried out in darkness, she passed over into semi-somnambulism, or into ecstasy. The automatic writing had thus the same effect as the preliminary table-turning. 3. _The Hallucinations._--The nature of the passing into somnambulism in the second séance is of psychological importance. As stated, the automatic phenomena were progressing favourably when darkness came on. The most interesting event of this séance, so far, was the brusque interruption of the communication from the grandfather, which was the starting-point of various debates amongst the members of the circle. These two momentous occurrences, the darkness and the striking event, seem to have been the foundation for a rapid deepening of hypnosis, in consequence of which the hallucinations could be developed. The psychological mechanism of this process seems to be as follows. The influence of darkness upon the suggestibility of the sense-organs is well known.[39] Binet[40] states that it has a special influence on hysterics, producing a state of sleepiness. As is clear from the foregoing, the patient was in a state of partial hypnosis and had constituted herself one with the unconscious personality in closest relationship to her in the domain of speech. The automatic expression of this personality is interrupted most unexpectedly by a new person, of whose existence no one had any suspicion. Whence came this cleavage? Obviously the eager expectation of this first séance had very much occupied the patient. Her reminiscences of me and my family had probably grouped themselves around this expectation; hence these suddenly come to light at the climax of the automatic expression. That it was just my grandfather and no one else--not, _e.g._, my deceased father, who, as she knew, was much closer to me than the grandfather whom I had never known--perhaps suggests where the origin of this new person is to be sought. It is probably a dissociation of the personality already present which seized upon the material next at hand for its expression, namely, upon the associations concerning myself. How far