A case in which this strange abdication of all self-control led to most desirable consequences, is mentioned by Dr. Mayo. A young man recently from Oxford once saw a friend of his enter the room in which he was dining with some companions. The new comer, just returning from hunting, seemed to them to look unusually pale and was evidently in a state of great excitement. After much urging he at last confessed that he had been seriously disturbed in mind by a man who had kept him close company all the way home. This stranger, on horseback like himself, had been his exact image, down to a new bridle, his own invention, which he had tried that day for the first time. He fancied that this "double" was his own ghost and an omen of his impending death. His friends advised him to confer with the head of his college; this was done, and the latter gave him much good advice, adding the hope that the warning would not be allowed to pass unimproved. It is certain that the apparition made so strong an impression upon the young man as to lead to his entire reformation, at least for a time. It is claimed by many writers that there are persons who continually have visions, because they live in constant communication with spirits, although in all cases they have to pay a fearful penalty for this sad privilege. They are invariably diseased people, mostly women, who fall into trances, have cataleptic attacks, or suffer of even more painful maladies, and during the time of their affliction behold and converse with the inmates of another world. The most renowned of these seers was a Mrs. Hauffe, who has become well known to the reading world through Dr. J. Kerner's famous work, "The Seeress of Prevorst." A peculiar feature in her case was the fact that the visions she had were invariably announced to bystanders by peculiar sounds, heard by all who were present. The forms assumed by her mysterious visitors varied almost infinitely; now it was a man in a brown gown, and now a woman in white. Often, when the spirits appeared in the open air, and she tried to escape from them by running, she was bodily lifted up and hurried along so fast that her companions could not keep pace with her. It was only later in life that she fell as a patient into the hands of Dr. Kerner, who was quite distinguished as a poet, and had a great renown as a physician for insane people of a special class. His house at Weinsberg in Würtemberg, was filled to overflowing with persons of all classes of society, from the highest to the lowest, and all had visions. Nor was the doctor himself excluded; he also was a seer, and has given in the above-mentioned book a full and most interesting account of the diseases in connection with which magic phenomena are most frequently observed. By the aid of careful observation of actual facts, and using such revelations vouchsafed to him and others as he believed fully trustworthy, he formed a regular theory of visions. First of all he