The clearest statement of this view was given by the late Frederic Myers; he suggested that the stream of consciousness in which we habitually lived was not our only one. Possibly our habitual consciousness might be a mere selection from a multitude of thoughts and sensations--some, at least, equally conscious with those we empirically knew. No primacy was granted by this theory to the ordinary waking self, except that among potential selves it appeared the fittest to meet the needs of common life. As a rule, the waking life was remembered in hypnosis, and the hypnotic life forgotten in the waking state; this destroyed any claim of the primary memory to be the sole memory. The self below the threshold of ordinary consciousness Myers termed the "subliminal consciousness," and the empirical self of common experience the "supraliminal." He held that to the subliminal consciousness and memory a far wider range, both of physiological and psychical activity, was open than to the supraliminal. The latter was inevitably limited by the need of concentration upon recollections useful in the struggle for existence; while the former included much that was too rudimentary to be retained in the supraliminal memory of an organism so advanced as that of man. The recollection of processes now performed automatically and needing no supervision, passed out of the supraliminal memory, but might be retained by the subliminal. The subliminal, or hypnotic, self could exercise over the vaso-motor and circulatory systems a degree of control unparalleled in waking life. Thus, according to the Nancy school, the deeply hypnotised subject responds automatically to suggestion before his intellectual centres have had time to bring their inhibitory action into play; but, on the other hand, in the subliminal consciousness theory, volition and consciousness are recognised to be unimpaired in hypnosis. _IV.--Curative Value of Hypnotism_ The intelligent action of the secondary self may be illustrated by the execution of certain post-hypnotic acts. Thus, one of my patients who, at a later period, consented to become the subject of experiment, developed an enormously increased power of time appreciation. If told, during hypnosis, for example, that she was to perform some specific act in the waking state at the expiration of a complicated number of minutes, as, for example, 40,825, she generally carried out the suggestion with absolute accuracy. In this and similar experiments, three points were noted. (1) The arithmetical problems were far beyond her normal powers; (2) she normally possessed no special faculty for appreciating time; (3) her waking consciousness retained no recollection of the experimental suggestions or of anything else that had occurred during hypnosis. It is difficult to estimate the exact value of suggestion in connection with other forms of treatment. There are one or two broad facts which ought to be kept in mind.