“One of the most remarkable of his exploits occurred several years after the incident just given. I think it was in 1860 or 1861.... In the rounds of his practice he had a patient, about whom he was very anxious. It was in the coldest winter weather, and the residence of the patient was about two miles distant. Visiting him early in the evening, he found him in a state so unsatisfactory, that he informed the family that if he did not find him better the next visit, he should change the medicine entirely. On rising the next morning, he went to the barn to put his horse to the cutter for an early start. He was a little puzzled at finding things somewhat misplaced, but supposed some person had been at the stable in search of a missing article. On visiting the patient, he was gratified to find a marked improvement. He inquired when the improvement commenced, and was answered, ‘Immediately after taking the powders which he had given in the night.’ The truth flashed upon him at once, but concealing his emotion, he inquired, with as careless an air as he could assume, ‘About what time was it when I was here?’ They replied, ‘Between two and three o’clock.’ This proved to have been the case, as he was afterwards told by the family where he boarded. He had been giving the patient some fluid medicine, which he ordered discontinued, and then put up several powders, such as he had concluded upon the night previous, combining them as usual, and administering the first one himself.” The foregoing examples illustrate the fact that ordinary vision is not necessary to guide the movements of the somnambulist. Sometimes the patient walks about with open eyes; on other occasions they are firmly closed. It is generally admitted that the tactile and muscular senses are greatly exalted, so that they furnish guiding sensations which are sufficient to direct the most complicated movements. The history of the medical student observed by Dr. Allen shows how preternaturally sensitive the organs of vision may become--actually seeing the clock in the dark during the somnambulic paroxysm. When one considers the remarkably hyperæsthetic condition of the senses in certain other forms of nervous disorder, it is not surprising that sensory impressions which would be wholly neglected in a healthy waking state, may become sufficient to excite perceptions and to guide the movements which they have aroused. It is undoubtedly true that in certain cases the somnambulist does derive some information through the medium of the eyes--does really see; but it is also a fact that he only sees, hears, tastes and feels the objects which are immediately related with the action of his dream. It appears also that an impression derived from any organ of sense may suffice to arouse any other or all of the internal organs of perception, so that the patient seems to see, to hear, and even to taste objects which he knows only through the sense of touch. Sometimes the image thus externalized