The patient was put into a condition close to the hypnotic state. There was some catalepsy of a transient character, but no suggestibility of the hypnotic type. In this state it came to light that the patient “many years ago” was forced to sleep in a dark, damp cellar where it was bitter cold. The few nights passed in that dark, cold cellar he had to leave his bed, and shaking, trembling, and shivering with cold and fear he had to go about his work in expectation of a severe punishment in case of non-performance of his duties. While in the intermediary, subwaking, hypnoidal state, the patient was told to think of that dark, damp, cold cellar. Suddenly the attack set in,--the patient began to shake, shiver, and tremble all over, his teeth chattering as if suffering from intense fear. The attack was thus reproduced in the hypnoidal state. “This is the way I have been,” he said. During this attack no numbness, no sensory disturbance, was present. The patient was quieted, and after a little while the attack of shivering and fear disappeared. The room in which the patient was put into the subconscious state was quite dark, and accidentally the remark was dropped that the room was too dark to see anything; immediately the attack reappeared in all its violence. It was found later that it was sufficient to mention the words, “dark, damp, and cold” to bring on an attack even in the fully waking state. We could thus reproduce the attacks at will,--those magic words had the power to release the pent-up subconscious forces and throw the patient into convulsions of shakings and shiverings, with chattering of the teeth and intense fear. Thus the apparent epileptiform seizures, the insistent psychomotor states of seemingly unaccountable origin, were traced to subconscious fear obsessions. The following case is of similar nature. The study clearly shows the subconscious nature of such psycholeptic attacks:[10] Mr. M., aged twenty-one years, was born in Russia, and came to this country four years previously. His family history, as far as can be ascertained, is good. There is no nervous trouble of any sort in the immediate or remote members of his family. The patient himself has always enjoyed good health. He is a young man of good habits. He was referred to me for epileptiform attacks and anaesthesia of the right half of his body. The attack is preceded by an aura consisting of headache and a general feeling of malaise. The aura lasts a few days and terminates in the attack which sets in about midnight, _when the patient is fully awake_. The attack consists of a series of spasms, rhythmic in character, and lasting about one or two minutes. After an interval of not more than thirty seconds the spasms set in again.