—Mrs. J. R., a house-wife, aged 25.
—Her father died at about fifty years of age of some acute illness; her mother is living and well, and is about 56 years old; two brothers and one sister are living and well. There is no hereditary taint.
—The patient had cervical adenitis when a child, the glands broke down and opened spontaneously, and healed with considerable scarring, but quite promptly. She has had what she describes as "sick headaches" all her life. The pain is of sudden onset, is neuralgic in character, located over the left temple, left side of forehead and extending through the left eye and ear; the teeth and face are not involved. The attacks come on irregularly every two or three weeks and last from one to three days. During one of these seizures the patient is completely prostrated, is weak, dizzy