them but would even stick out her tongue to have a pin stuck in it. The relationship of catalepsy to resistiveness is interesting but unfortunately complicated and unclear. In only one of our cases was catalepsy definitely present without resistiveness, and in one other a “tendency to catalepsy” was noted without muscular rigidity being observed. In this latter case, when the catalepsy became unquestionable, resistiveness also appeared. It is one thing to note this coexistence and another to explain it adequately. All that we can offer are mere speculations as to the real meaning of the association of these phenomena. It may be that the tension of muscles that occurs when resistiveness is present gives the idea to the patient of holding the position. There would be two possible explanations for this. We might think there is a dissociation of consciousness, like that of hysteria, where the feeling of tenseness in the muscles that comes from the resistance to gravity is not discriminated from the resistance to the movements made by the examiner. On the other hand, there might be a similar dissociation where the perception of contraction in the antagonistic muscles is interpreted as the action of the examiner in placing the limb in a given position. This latter view would seem, on the face of it, ridiculous, inasmuch as its presumes the existence of two directly opposed tendencies, namely, those of opposition to the will of the physician and compliance with it. But ambivalent tendencies are frequently present in psychopathic states, and moreover we find occasionally some evidence in the behavior of the patient to substantiate this view. For example, at one stage of the stupor of Annie G. (Case 1), her arm could be moved without resistance. Then the elbow would catch and at this moment the position would be maintained. Such observation is highly suggestive of the resistance being signal for the catalepsy. In Isabella M. the catalepsy appeared when resistance to passive movements also developed. On the other hand, when the resistance became extreme, the catalepsy was reduced, and vice versa. This makes one think of two tendencies: suggestibility on the one hand, and opposition on the other. We might presume that when both are present and equally strong, stiffness with passive movements results as a kind of compromise, but when there is a greater development of one, the other is inhibited. Such speculations remind one strongly of the psychology of conversion hysteria and of hypnotism. In some cases of stupor hysterical symptoms are quite definitely present. For instance, Celia G. began her psychosis with hysterical convulsions which would terminate with short periods of stupor. Later the stupor became persistent and during this stage she had catalepsy (and restiveness as well) in her left arm only. On recovery from her stupor she complained of stiffness in her hands, which examination proved to be a purely hysterical difficulty.