Wernicke, unhampered by classifications of catatonia and manic-depressive insanity with inelastic boundaries, calls all stupor reactions akinetic psychoses with varying prognosis. He does not make Kraepelin’s mistake of confusing the apathy of stupor with the retardation of depression, stating distinctly that the processes are different. Bleuler also has grasped this discrimination. He points out that the thinking disorder in what he terms “Benommenheit” (dullness) differentiates such conditions from affectful depression with retardation. He writes, of course, mainly of dementia præcox,[28] but makes some remarks germane to our problem. In the first place he denies the existence of stupor as a clinical entity, except perhaps as the quintessence of “Benommenheit”, it is the result of total blocking of mental processes. Consequently, he says, one can observe the external features of stupor in all akinetic catatonics, in marked depressive retardation, when there is a lack of interest, affect or will, in autism, with twilight states, as a result of negativism or, finally, when numerous hallucinations distract the patient’s attention into a world of fancy. He notes that in all stupors (with the exception, perhaps, of “Benommenheit”) the symptoms may disappear with appropriate psychic stimulation or that some reaction, no matter how larval, may be observed. He speaks, for instance, of the visits of relatives waking the patient up. His only real group is “Benommenheit,” which he separates out as a true clinical entity. This seems to correspond roughly with our “Partial Stupors.” It is essentially an affectless, thinking disorder, usually acute, sometimes chronic, occurring among schizophrenics. He believes that it is the result of some organic process (intracranial pressure or toxin). Activity is much reduced or absent; they have poor understanding, answer slowly or confusedly; their actions are sometimes as ridiculous as those of people in panic (e.g., throwing a watch out of the window when the house is on fire); the defect is best seen in writing, for large elisions are found in sentences. He was able to analyze only one case and she retained her affect; it was even labile and marked. One suspects that such a case might, perhaps, not really find a place in the “Benommenheit” group even as Bleuler himself describes it.