in prisoners", and in which the catatonic symptoms exist in a still more pronounced manner. The severe forms of this disorder, which may extend over weeks and months, are liable to be confused with progressive deteriorating processes, especially so because those symptoms which were wont to be considered by many as positively unfavorable prognostically, may be found here in very deceptive imitations. Thus the affected, silly behavior, impulsive actions, temporary verbigeration, senseless word salad, grimacing, stereotypy, attitudinizing, etc., which these patients exhibit, may easily be mistaken for the typical catatonic picture of dementia præcox. According to Raecke's view the hysterical stupor is closely related to the Ganser twilight syndrome. Stuporous conditions may introduce the latter, and, vice versa, Ganser complexes may creep into the stupor. Raecke's stupor, like Ganser's twilight syndrome, frequently develops in criminals immediately after arrest or as a result of great physical or psychic exertion. Sometimes the stupor is preceded by convulsions, at other times by a prodromal stage of general nervousness. In still other cases, unpleasant delusions and elementary hallucinations precede the stupor, which may follow immediately after this prodromal state or may be again preceded by a short attack of mania with clouded consciousness. In contrast to the genuine catatonia, Raecke's stupor as well as Ganser's twilight state, are characterized by _a high grade of impressionability to things in the environment, which may at any time suddenly cause a complete transition from an apparently deep stupor to normal manner and behavior_. Headaches, vertigo, and various hysterical stigmata are common to both the hysterical stupor and the Ganser twilight state. At times recovery takes place suddenly, but as a rule it is gradual and remittent in character. The duration of the disorder differs. It may last for hours or months, and there generally remains a more or less pronounced amnesia for the entire period of stupor.