DISCUSSION 169 



thinks (p. 229) that its physiological cause 

 is to be sought in disturbances in the nutrition 

 of the brain. 



5. ' I will refer shortly to the remarkable condition 

 which has been called " dual consciousness." These 

 conditions can occur quite suddenly ; whilst they 

 prevail, people perform complicated actions, take 

 long journeys, find themselves suddenly in strange 

 places, and do not know how they came thither. 

 A young man who was employed in Australia found 

 himself suddenly in Zurich ; he returned to his 

 first personality through reading an advertisement 

 in a newspaper, which reported his disappearance 

 from Australia. In these cases it is not a subordinate 

 mental organ which is affected, but a man's whole 

 personality is completely changed.' 



Answer to No. 5. The far-reaching disturb- 

 ances of consciousness, which Juliusburger here 

 denotes by the expression ' dual consciousness,' 

 may be explained on the analogy of the con- 

 ditions prevailing during dreams or a state of 

 dim-perception, when the power is lost of 

 judging of time or space, or of one's own 

 social position, dual consciousness is a con- 

 tinuous dream life. In the first place there is 

 an absence of sense attention, which is so 

 completely diverted from external sense 

 activity by the force of certain subjective 



