The usual form in which the idea appears is as a delusion of going to die or, literally, of being dead. It may appear as being in Heaven or Hell. A theoretically important group is that which includes the patients who, in addition, speak of being in situations such as under the water or underground, which we have mythological and psychological evidence to believe are formulations of a rebirth fantasy. Not rarely, preoccupation with death is expressed in sudden impulsive suicidal attempts. The affective setting of these different formulations is important. A delusion of literal death occurs with complete apathy. The wish to die is apt to appear without the usual accompaniment of sadness or distress but still with considerable energy when impulsive suicidal attempts are made. A prospect of death, particularly when there is anticipation of being killed, is apt in manic-depressive insanity to occur in a setting of anxiety. Similarly one ordinarily observes fear in the patient who has delusions of drowning or burial. In the stupor cases, however, this painful affect seems to be reduced to a mere dazed bewilderment or feeble exhibitions of a desire for safety, such as the slow swimming movements of a patient who thought she was under the water. When these ideas of danger become allied to everyday interests--husband or child imperiled, etc.--a weak affect in the form of depression is apt to occur. Physical symptoms are more common than in any other benign psychosis. Of these the most nearly constant is a low fever, the temperature running between 99° and 101°. Twenty-eight out of thirty-five cases had this slight elevation with a tendency for it to occur immediately at the beginning of marked stupor symptoms. Although the evidence does not positively exclude any possibility of infection, it speaks distinctly against this view. A possible explanation is that the low fever is a secondary symptom. The suprarenal glands may function insufficiently as a consequence of the emotional poverty, since all emotions which have been experimentally studied seem to stimulate the production of adrenalin. Without this normal hormone for the activity of the sympathetic nervous system, there would be a disturbance of skin and circulatory reactions that would interfere with the normal heat loss. Suggestive evidence to support this view comes from the frequency with which the extremities are cyanotic or cold, the skin greasy, sweating profuse or absent, and so on. Further observations are necessary to confirm or disprove this hypothesis, but we feel inclined to accept it tentatively because it is plausible and consistent with the view that stupor is essentially a psychogenic type of reaction. Another physical anomaly, which is presumably of endocrine origin, is the suppression of the menses. This probably results from lowered nutrition. In some cases it ensues directly on a psychic crisis before any nutritional change can have taken place.