The fact should be borne in mind that there is a diseased brain which needs nutrition, rest, and discipline, which must be proportioned to suit each case. Outdoor, simple life, with sea-bathing, carefully-selected diet, {173} without too much meat, exercise, mental training limited to the requirements of each patient, are the chief reliances. Iron, cod-liver oil, and arsenic are useful tonics. Stimulants, including tea and coffee, should be avoided. Quiet nights and necessary repose can be secured by bromides, exercise, and opiates used sparingly, which also control the impulse to masturbation. A sound education, a healthy experience of the rough and tumble of youthful life, and the careful avoidance of processes and habits of indulgence will often prevent the symptoms of disease from growing into traits of character and habits of life. On the other hand, in some cases there is a half-conscious struggle between the fine traits of character and the demoralizing influences of the disease, and a most pathetic effort to keep the better nature's supremacy over the lower impulses set free or developed by the destructive tendencies of a fearful malady. MENSTRUAL INSANITY differs from other periodic insanity in not being necessarily a further development of an hereditary or acquired state of mental degeneration, and in being curable in a fair proportion of cases. INSANITY OF GESTATION, PUERPERAL INSANITY, AND INSANITY OF LACTATION do not call for any further comment than the remark that they represent causes and conditions rather than types of disease. CLIMACTERIC INSANITY in women and in men is usually a curable folie raisonnante—insanity of action or affective insanity, which may develop into secondary dementia or chronic insanity with delusions. It does not necessarily include all acute forms of insanity occurring at the climacterium, but only those slowly developing with the physiological changes going on. The course is usually subacute, the duration a couple of years or more, and the termination in about half the cases is in recovery. Permanent change of character and further progress to incurable insanity are perhaps about equally common. TREATMENT consists in a sedative and fattening diet, simple, healthful conditions of life. Removal to an asylum or some form of restraint is needed where the conduct is such as to demand seclusion and control.