Sensation--There is very markedly diminished reaction to pin prick all over the right side, including face, arm, chest, leg and tongue. In some places complete analgesia obtains. Reaction to touch is likewise diminished and recognition of heat and cold is impaired. Speech--There is complete loss of the ability to make any sound, either voiced or whispered; that is to say, there is complete aphonia,-- there is loss of all voice. The patient understands everything, however, and writes her answers to questions rapidly and correctly. She can read whatever is written, there is no difficulty in the recognition of objects, no evidence of any aphasia whatever. The diagnosis--hysteria--can hardly be doubted. The history of headaches, fainting spells without marked impairment of consciousness, vomiting spells, hemianaesthesia, hemianalgesia, complete aphonia and an exaggerated paralysis, not only of the right leg, but of the ability to thrust out the tongue, while at the same time all other cranial functions were unimpaired together with the apparent health of the individual in every other respect, make up a syndrome hardly to pass unrecognized. Treatment--The patient was entirely inaccessible to direct suggestion, for no amount of assurance that her leg was all right enabled her to move it. When such suggestions were made, she shook her head firmly and conclusively, and this is true of suggestions concerning speech. This point is of importance in the consideration of the mechanism. Attempts at hypnotism failed ingloriously. Psychoanalysis was deferred for the time, and recourse was had to indirect suggestion and re-education.