It is of theoretical value because it has shown to us that in the determination of the pathology of hysteria the accidental moment plays a much greater part than is generally known and recognized. It is quite evident that in “traumatic” hysteria it is the accident which evokes the syndrome. Moreover in hysterical crises, if patients state that they hallucinate in each attack the same process which evoked the first attack, here too, the causal connection seems quite clear. The state of affairs is more obscure in the other phenomena. Our experiences have shown us _that the most varied symptoms which pass as spontaneous, or so to say idiopathic attainments of hysteria, stand in just as stringent connection with the causal trauma as the transparent phenomena mentioned_. To such causal moments we were able to refer neuralgias as well as the different kinds of anesthesias often of years duration, contractures and paralyses, hysterical attacks and epileptiform convulsions which every observer has taken for real epilepsy, petit mal and tic-like affections, persistent vomiting and anorexia, even the refusal of nourishment, all kinds of visual disturbances, constantly recurring visual hallucinations, and similar affections. The disproportion between the hysterical symptom of years duration and the former cause is the same as the one we are regularly accustomed to see in the traumatic neurosis. Very often they are experiences of childhood which have established more or less intensive morbid phenomena for all succeeding years.