There is a very curious case on record, of a lady whose “memory was capacious, and well stored with a copious stock of ideas. Unexpectedly, and without any forewarning, she fell into a profound sleep, which continued several hours beyond the ordinary term. On waking, she was discovered to have lost every trait of acquired knowledge; her memory was a blank. All vestiges, both of words and things, were obliterated and gone; it was found necessary for her to learn every thing again. She even acquired by new efforts the art of spelling, reading, writing, and calculating, and gradually became acquainted with the persons and objects around, like a being for the first time brought into the world. In these exercises she made considerable proficiency; but, after a few months, another fit of somnolency invaded her. On rousing from it, she found herself restored to the state she was in before the first paroxysm; but she was wholly ignorant of every event and occurrence that had befallen her afterwards. The former condition of her existence she now calls the old state, and the latter the new state; and she is as unconscious of her double character as two distinct persons are of their respective natures. For example, in her old state, she possesses all her original knowledge; in her new state, only what she acquired since. If a lady or gentleman be introduced to her in the old state, and vice versâ (so indeed of all other matters), to know them satisfactorily she must learn them in both states. In the old state she possesses fine powers of penmanship, while in the new she writes a poor awkward hand, not having had time or means to become expert! During four years and upwards, she has had periodical transitions from one of these states to the other. The alterations are always consequent upon a long and sound sleep. Both the lady and her family are now capable of conducting the affair without embarrassment; by simply knowing whether she is in the old or new state, they regulate the intercourse, and govern themselves accordingly!”

Other instances are more protracted; the impressions previous to a certain moment only being capable of renewal.

Mrs. S——, an intelligent lady, belonging to a respectable family in the state of New York, some years ago undertook a piece of fine needle-work. She devoted her time to it almost constantly for a number of days; but before she had completed it she became suddenly delirious. In this state, without experiencing any material abatement of her disease, she continued for about seven years, when her reason was suddenly restored. One of the first questions which she asked on this convalescence related to her needle-work. It is a remarkable fact that, during the long continuance of her delirium, she said nothing, so far as was recollected, about her needle-work, nor concerning any such subjects as usually occupied her attention when in health.

We read in Dr. Abercrombie, of a lady reduced by disease, in whose mind the memory of ten years was lost. “Her ideas were consistent with each other, but they referred to things as they stood before her removal (to Edinburgh).”

In these instances it is probable that the fault may be referred to the original impression, some disorder or state of the brain causing it to be only superficially impressed during these ten years of oblivion.

There is a curious story in the history of the Royal Academy of Sciences, which Beattie has recorded in these words: —

“A nobleman of Lausanne, as he was giving orders to a servant, suddenly lost his speech and all his senses. Different remedies were tried, without effect, for six months; during all which time he appeared to be in a deep sleep or deliquium, with various symptoms at different periods, which are particularly specified in the narration. At last, after some chirurgical operations, at the end of six months his speech and senses were suddenly restored. When he recovered, the servant to whom he had been giving orders when he was first seized with the distemper, happening to be in the room, he asked whether he had executed his commission; not being sensible, it seems, that any interval of time, except, perhaps, a very short one, had elapsed during his illness.”

Ida. I have read two stories of melancholy romance, which are not mal-à-propos to your arguments, Evelyn, in which the memory of one intense impression has “gone into a being,” influencing the current of every after-thought, and the mind seeming ever after unconscious of all past or present, but the incident of one moment.

A gentleman, on the point of marriage, left his intended bride for a short time. He usually travelled in the stage-coach to the place of her abode; but the last journey he took from her was the last of his life. Anxiously expecting his return, she went to meet the vehicle, when an old friend announced to her the death of her lover. She uttered an involuntary scream, and one piteous exclamation, “He is dead!” From this fatal moment, for fifty years, has this unfortunate female daily, in all seasons, traversed the distance of a few miles to the spot where she expected her future husband to alight from the coach, uttering, in a plaintive tone, “He is not come yet; I will return to-morrow.”

A young clergyman, on the eve of marriage, received a severe injury. During his future life of celibacy, which was protracted to the 80th year, this one idea only possessed his mind, that his hour of happiness was approaching, and to the last moment he talked of his marriage with all the passion of a devoted lover.