The sleep-walker is guided by the motive which actuated his waking moments, and he sometimes executes performances with a degree of perfection which is not even possible to one in perfect possession of his senses. I have known a nurse get up in the middle of the night, collect all the patients’ day attire, and arrange the clothing for about 40 patients at the foot of each bed, after which she proceeded to collect all plants and flowers from an adjoining bathroom and place them in the ward, as in the daytime. She then retired to rest, but, upon awakening, she had forgotten all the details of the sleep-walking incident.