These findings were indicative of functional rather than organic disease. The _previous history_ of the case was significant. The first attack came on after peculiar circumstances, when the patient was sixteen years of age and living in Russia. After returning from a ball one night, he was sent back to look for a ring which the lady, whom he escorted, had lost on the way. It was after midnight, and his way lay on a lonely road which led by a cemetery. When near the cemetery he was suddenly overcome by a great fright, thinking that somebody was running after him. He fell, _struck his right side_, and lost consciousness. The patient did not remember this last event. It was told by him when in a hypnotic state. The patient was a Polish Jew, densely ignorant, terrorized by superstitious fears of evil powers working in the dead of night. By the time he was brought home he regained consciousness, but there existed a spasmodic shaking of the right side, involving the arm, leg, and head. The spasm persisted for one week. During this time he could not voluntarily move his right arm or leg, and the right half of his body felt numb. There was also apparently a loss of muscular sense, for he stated that he was unaware of the shaking of his arm or leg, unless he looked and saw the movements. In other words, there was right hemiplegia, anaesthesia, and spasms. For one week after the cessation of the spasms his right arm and leg remained weak, but he was soon able to resume his work, and he felt as well as ever. Since then every year, as already stated, about the same month the patient has an attack similar in every respect to the original attack, with the only exception that there is no loss of consciousness. Otherwise the subsequent yearly attacks are _photographic pictures, close repetitions, recurrences of the original attack_. A series of experiments accordingly was undertaken. First, as to the anaesthesia. If the anaesthesia were functional, sensory impressions ought to be felt, even though the patient was unconscious of them, and we ought to be able to get sensory reactions. Experiments made to determine the nature of the anaesthesia produced interesting results. These experiments show that the anaesthesia is not a true one, but that impressions from the anaesthetic parts which seem not to be felt are really perceived subconsciously. Different tests showed that the subconscious reactions to impressions from the anaesthetic hand were more delicately plastic and responsive than the conscious reactions to impressions from the normal hand. We have the so-called “psychopathic paradox” that _functional anaesthesia is a subconscious hyperaesthesia_.