“February 26. Slight motions of the limbs came on in bed. She arose at nine o’clock, after which they increased, and became unusually severe. She was hurled from side to side of the couch-chair upon which she sat, for a considerable time, without intermission; was sometimes instantaneously and forcibly thrown upon her feet, when she jumped and stamped violently. She had headache; the eyelids were frequently affected, and she had often a sudden propensity to spring or leap upwards. The affection ceased about eleven o’clock in the forenoon, the patient being very much fatigued; but it returned about noon, and a third time in the afternoon, when she was impelled into every corner of the room, and began to strike the furniture and doors violently with the hand, as she passed near them, the sound of which afforded her great satisfaction. The fourth attack was at night; was very violent, and ended with sickness and vomiting. She went to bed at half-past eleven. Her nights were invariably good. The last three attacks were more violent than the former ones, but they continued only half an hour each. “February 27. The attack commenced in bed, and was violent, but of short duration. When she arose about ten, she had a second attack, continuing an hour, except an interval of five minutes. She now struck the furniture more violently and more repeatedly. Kneeling on one knee, with the hands upon the back, she often sprang up suddenly and struck the top of the room with the palm of the hand. To do this, she rose fifteen inches from the floor, so that the family were under the necessity of drawing all the nails and hooks from the ceiling. She frequently danced upon one leg, holding the other with the hand, and occasionally changing the legs. In the evening, the family observed the blows upon the furniture to be more continuous, and to assume the regular time and measure of a musical air. As a strain or series of strokes was concluded, she ended with a more violent stroke or a more violent spring or jump. Several of her friends also at this time noticed the regular measure of the strokes, and the greater regularity the disease was assuming; the motions being evidently affected, or in some measure modified by the strokes upon the surrounding bodies. She chiefly struck a small slender door, the top of a chest of drawers, the clock, a table, or a wooden screen placed near the door. The affection ceased about nine o’clock, when the patient went to bed.