"It was necessary to give her a drug to quiet her. I learned that she had been subject to these attacks ever since she began to feel jealous of her husband. Inquiring more closely, I found that, quite without reason, she was specifically jealous of him in connection with a certain woman in the small town where he carried on his business. Thereupon I advised him, for the sake of her health and his own peace of mind, to remove to another town. This having been done, her jealousy abated and the convulsive seizures ceased." Of course, this mode of treatment--if treatment it should be called--gave no guarantee that the jealousy and the consequent convulsions would not recur under other circumstances. What the jealous wife really needed was psychical re-education to give her a saner philosophy of life, enabling her to get a better grip on her emotions, and, through this, to control better the workings of her nervous system. Here we touch on what is far and away the most important fact in the problem of jealousy--a fact unappreciated by too many parents, and, for that matter, likewise unappreciated by most writers on the pedagogy of childhood. This fact is that jealousy, being always an evidence of uncontrollable emotionality, and itself serving still further to weaken emotional control, may, and often does, give rise to functional mental and nervous troubles. These may appear during childhood, or their appearance may be postponed until adult life, as in the instance cited above. In either event, their underlying cause is always the same: failure to train the individual during early life to react with calmness, courage, and moderation to the stresses of existence. In the case of a person of naturally phlegmatic nervous constitution, lack of such training does not do so much harm, for the reason that excessive emotional reactions are unlikely to occur, no matter what the provocation. But when there is any marked degree of sensitiveness in the nervous organisation--as there usually is in our land: Americans being conspicuously of the so-called nervous temperament--the need for training in emotional control becomes imperative. In the case of persons who have inherited any tendency to nervous ailments, persons burdened with what is technically known as a neuropathic diathesis, absence of this training may be disastrous.