sentient faculty when lying, as if the body were numb. Fifth prover: _Miss Nina_, 14 years old, sanguine temperament, cheerful disposition, red face, auburn hair. The least cause excites her mirth; she would like to sing. Regular sleep, generally longer than the three first days. Drowsy all day, with frequent yawning, without any desire to go to bed. Dreams which she is unable to recollect. Lachrymation, with sensation as of sand in the eyes. Urine more profuse and of a lighter color. Numbness of the right arm. Sixth prover: _Mr. Cyprien Huet_, 51 years old, sanguine temperament, robust constitution, serious disposition, red conjunctiva, weak sight, redness of the margin of the eyelids. Very gay. He laughs and sings all day. Deep sleep, commencing sooner and ending later than usual, for four days. Quarrelsome dreams, second day. Violet-colored spots elongated horizontally, on the right hypochondrium. Dull pain at a point on the hairy scalp, and pressure at the occiput on the right side. 195. Boring pain at the top of the forehead, second day. Contusive pain at the zygomata. Violent lancinations in the upper part of the forehead and in the left side of the head, for one minute, second day, noon. Pain in the upper part of the left parietal bone, as if the skull would split. Boring pains in the right upper lid, first day. 200. Dull pain at the right eye, as from a blow, relieved by pressure, second day, noon. Slight pain in the nose. Intense and sudden itching on the dorsum of the nose. Stoppage of the right ear, with hard hearing. Contusive pains in the outer parts of the orbits. 205. Sensation as of a pustule on the cheek, of the size of a pea, for some seconds. Violent itching at the same place. Sensation in the throat as from swallowing some astringent substance. Borborygmi when lying down, second day, morning. Lancination in the hypochondria. 210. Mucous diarrhœa, dark-colored, mixed with fæcal matter in hard and single fragments, third day. Light-colored and copious urine, second and third day. Dry heat in the palms of the hands, for several days. Sense of contusion in the muscles of the right forearm, at the inner side between the radius and cubitus, first day, morning. Crampy pain in the muscles of the right hand, especially at the thumb, first day, morning. 215. Dull pain and numbness, as is experienced when pressing the brachial nerve where it passes over the internal condyle of the humerus; aggravated by contact, first day, noon. Violent crampy pain in the muscles of the palm of the right hand, for five minutes. Crampy pain in the left little finger. Numbness of the fingers of the right hand for several hours, first day, after 12. Lancination and heat at the tip of the right thumb, as if there were a whitlow, extending to the first phalangeal articulation. 220. Heaviness and numbness of the extremities, first day, evening. Contusive pain at the forearm. Itching at the last fingers. Numbness