There's no such thing; It is the bloody business which informs Thus to mine eyes. This abnormal state, which sees things having no existence outside the "mind's eye," is no respecter of persons; the savage and the civilized are alike its victims. It may be organic or functional. Organic, when disease is present; functional, through excessive fatigue, lack of food or sleep, or derangement of the digestive system, causing the patient, as Hood says, "to think he's pious when he's only bilious." Under such conditions, hallucinations of all sorts possess the mind; hallucinations from which the true peptic, who, as Carlyle says, "has no system," is delivered. Only the mentally anæmic, the emotionally overwrought, the unbalanced, and the epileptic, are the victims, whether of the lofty illusions of august visions such as carried Saint Paul, Saint Theresa, and Joan of Arc, into the presence of the holiest; or hallucination of drowned cat, thin and "dripping with water," born of the disordered nerves of Mrs. Gordon Jones. To quote from Dr. Gower's Bowman Lecture (Nature, 4th July, 1895) on Subjective Visual Sensations, such as accompany fits, when, e. g., sensations of sight occur without the retina being stimulated: The spectra perceived before epileptic fits vary widely. They may be stars or sparks, spherical luminous bodies, or mere flashes of light, white or coloured, still or in movement. Often they are more elaborate, distinct visions of faces, persons, objects, places. They may be combined with sensations from the other special senses, as with hearing and smell. In one case a warning, constant for years, began with thumping in the chest ascending to the head, where it became a beating sound. Then two lights appeared, advancing nearer with a pulsating motion. Suddenly these disappeared and were replaced by the figure of an old woman in a red cloak, always the same, who offered the patient something that had the smell of Tonquin beans, and then he lost consciousness. Such warnings may be called psychovisual sensations. The psychical element may be very strong, as in one woman whose fits were preceded by a sudden distinct vision of London in ruins, the river Thames emptied to receive the rubbish, and she the only survivor of the inhabitants.