I omit the general instances of delusion in fever or delirium, as well as mere dreams considered in themselves. A delineation of this subject, however inexhaustible and interesting, is to be passed over.
What is the connexion of sleeping and of waking?
II. I distinctly remember dreaming three several times, between intervals of two or more years, the same precise dream. It was not so much what is ordinarily called a dream; the single image, unconnected with all other images, of a youth who was educated at the same school with myself, presented itself in sleep. Even now, after the lapse of many years, I can never hear the name of this youth, without the three places where I dreamed of him presenting themselves distinctly to my mind.
III. In dreams, images acquire associations peculiar to dreaming; so that the idea of a particular house, when it recurs a second time in dreams, will have relation with the idea of the same house, in the first time, of a nature entirely different from that which the house excites, when seen or thought of in relation to waking ideas.
IV. I have beheld scenes, with the intimate and unaccountable connexion of which with the obscure parts of my own nature, I have been irresistibly impressed. I have beheld a scene which has produced no unusual effect on my thoughts. After the lapse of many years I have dreamed of this scene. It has hung on my memory, it has haunted my thoughts, at intervals, with the pertinacity of an object connected with human affections. I have visited this scene asain. Neither the dream could
