Of this the following instance was told to the author by a gentleman connected with the sufferer. A young man of fortune, who had led what is called so gay a life as considerably to injure both his health and fortune, was at length obliged to consult the physician upon the means of restoring, at least, the former. One of his principal complaints was the frequent presence of a set of apparitions, resembling a band of figures dressed in green, who performed in his drawing-room a singular dance, to which he was compelled to bear witness, though he knew, to his great annoyance, that the whole _corps de ballet_ existed only in his own imagination. His physician immediately informed him that he had lived upon town too long and too fast not to require an exchange to a more healthy and natural course of life. He therefore prescribed a gentle course of medicine, but earnestly recommended to his patient to retire to his own house in the country, observe a temperate diet and early hours, practising regular exercise, on the same principle avoiding fatigue, and assured him that by doing so he might bid adieu to black spirits and white, blue, green, and grey, with all their trumpery. The patient observed the advice, and prospered. His physician, after the interval of a month, received a grateful letter from him, acknowledging the success of his regimen. The greens goblins had disappeared, and with them the unpleasant train of emotions to which their visits had given rise, and the patient had ordered his town-house to be disfurnished and sold, while the furniture was to be sent down to his residence in the country, where he was determined in future to spend his life, without exposing himself to the temptations of town. One would have supposed this a well-devised scheme for health. But, alas! no sooner had the furniture of the London drawing-room been placed in order in the gallery of the old manor-house, than the former delusion returned in full force: the green _figurantés_, whom the patient's depraved imagination had so long associated with these moveables, came capering and frisking to accompany them, exclaiming with great glee, as if the sufferer should have been rejoiced to see them, "Here we all are--here we all are!" The visionary, if I recollect right, was so much shocked at their appearance, that he retired abroad, in despair that any part of Britain could shelter him from the daily persecution of this domestic ballet. There is reason to believe that such cases are numerous, and that they may perhaps arise not only from the debility of stomach brought on by excess in wine or spirits, which derangement often sensibly affects the eyes and sense of sight, but also because the mind becomes habitually predominated over by a train of fantastic visions, the consequence of frequent intoxication; and is thus, like a dislocated joint, apt again to go wrong, even when a different cause occasions the derangement.