I did not find it easy to determine the diagnosis, but for two reasons I concluded to agree with my colleague. First, because it was rather peculiar that such a highly intelligent patient should not be able to give anything definite about the character of her pains. A patient suffering from an organic pain, if it is not accompanied by any nervousness will be able to describe it definitely and calmly; it may perhaps be lancinating, appearing at certain intervals, extending from this to that location, and in his opinion it may be evoked by this or that influence. The neurasthenic describing his pain gives the impression of being occupied with some difficult mental problem reaching far beyond his powers. His features are tense and distorted as though under the domination of a painful affect, his voice becomes shriller, he struggles for expression, he rejects all designations that the physician makes for his pains, even though they are undoubtedly afterwards found as appropriate. He is ostensibly of the opinion that language is too poor to give expression to his feelings. His sensations are something unique, they never existed before so that they can not be exhaustively described. He never tires of constantly adding new details and when he has to stop he is surely controlled by the impression that he was unsuccessful in making himself understood to the physician. All this is due to the fact that his pains absorb his whole attention. In the case of Miss v. R. we had just the opposite behavior and we had to conclude from this that she attributed sufficient significance to the pain, but that her attention was concentrated on something else of which the pains were the accompanying phenomena, perhaps on thoughts and sensations which were connected with the pain. A still greater determination for the conception of the pain must however, be found in a second moment. If we irritate a painful area in a patient suffering from an organic disease or neurasthenia his physiognomy will show a definite expression of discomfort or of physical pain. Furthermore, the patient winces, refuses to be examined and assumes a defensive attitude. With Miss v. R. when the hyperalgesic skin or muscles of her legs were pinched or pressed her face assumed a peculiar expression approaching nearer pleasure than pain, she cried out and—I had to think of a pleasurable tickling—her face reddened, she threw her head backward, closed her eyes, and her body bent backward; all this was not very distinct but sufficiently marked so that it could only agree with the conception that her affliction was a hysteria and that the irritation touched a hysterogenic zone.