This admirable sympathy, although necessarily in an inferior degree, is generally manifested, more or less, between all persons twin-born. Dr. Passavent and other authorities mention several instances of this kind, in which, although at some distance from each other, the same malady appeared simultaneously in both, and ran precisely a similar course. A very affecting instance of this sort of sympathy was exhibited, not very long ago, by a young lady, twin-born, who was suddenly seized with an unaccountable horror, followed by a strange convulsion, which the doctor, who was hastily called in, said exactly resembled the struggles and sufferings of a person drowning. In process of time, the news arrived that her twin-brother, then abroad, had been drowned precisely at that period. It is probably a link of the same kind that is established between the magnetiser and his patient, of which, besides those recorded in various works on the subject, some curious instances have come to my knowledge, such as uncontrollable impulses to go to sleep, or to perform certain actions, in subservience to the will of the distant operator. Mr. W—— W——, a gentleman well known in the north of England, related to me that he had been cured, by magnetism, of a very distressing malady. During part of the process of curé, after the _rapport_ had been well established, the operations were carried on while he was at Malvern, and his magnetiser at Cheltenham, under which circumstances the existence of this extraordinary dependence was frequently exhibited in a manner that left no possibility of doubt. On one occasion, I remember that Mr. W—— W—— being in the magnetic sleep, he suddenly started from his seat, clasping his hands as if startled, and presently afterward burst into a violent fit of laughter. As, on waking, he could give no account of these impulses, his family wrote to the magnetiser to inquire if he had sought to excite any particular manifestations in his patient, as the sleep had been somewhat disturbed. The answer was, that no such intention had been entertained, but that the disturbance might possibly have arisen from one to which he had himself been subjected. “While my mind was concentrated on you,” said he, “I was suddenly so much startled by a violent knock at the door, that I actually jumped off my seat, clasping my hands with affright. I had a hearty laugh at my own folly, but am sorry if you were made uncomfortable by it.” I have met with some accounts of a sympathy of this kind existing between young children and their parents, so that the former have exhibited great distress and terror at the moment that death or danger have supervened to the latter; but it would require a great number of instances to establish this particular fact, and separate it from cases of accidental coincidence. Dr. Passavent, however, admits the phenomena.