_The impairment of memory_ in a peculiar way.

In the hypnotic condition all affairs of the ordinary life are forgotten; on the other hand, after waking the events of the hypnotic condition are forgotten.
Further, in any subsequent period of Hypnosis the events of the former similar periods are remembered.

So a person who is frequently hypnotized has two continuous memories: one for the events of his normal life, exercised only when he is normal; and one for the events of his hypnotic periods, exercised only when he is hypnotized.
2.

_Suggestibility_ to a remarkable degree.

By this is meant the tendency of the subject to have in reality any mental condition which is suggested to him.