This condition seldom needs any elaborate dietetic treatment, but it may be mentioned here as contrasting with the chronic inflammatory state already described with which confusion is possible. It is by no means uncommon. Its oddness should lead to its recognition. Though we can only guess at the actual mechanism by which in this condition an evacuation of the bowel is so mysteriously evoked, no one can doubt that it is of nervous origin, and that the intestine, apart from its intrinsic nervous mechanism, is perfectly healthy. The motor element predominates, but in some cases it seems certain that there occurs also at times a sudden influx of fluid into the bowel, either serous fluid or succus entericus. Many forms are met with. In some people, whose bowels act regularly, a hurried uncontrollable stool will occur under shock, emotion, fright, excitement, or even the ordeal of speaking in public. Such a stool, moreover, may be profuse and liquid. In other cases the bowels habitually act two or three times in the day at irregular intervals, and such patients complain of the violent (though painless) peristalsis and the noisy gurgling that attend such evacuations. The seriousness of this state lies in the fact that any unwonted hurry, annoyance, or excitement means a call to stool. Even the knowledge that no lavatory is at hand may be sufficient to produce distress. The opium or morphine habit is often the result. Frequent as the stools are in such cases, they are curiously bulky. All the instances that I have seen were in strong men who betrayed no other neurotic tendency, and in some of these the trouble began in boyhood. There are some people in whom certain articles of food will quickly excite purging. Verification is easy and dispels the doubt that this story at first inspires. Finally lientery is a genuine ailment. It appears as if the entrance of food into the stomach excites a general movement throughout the whole intestine, and sometimes every large meal is immediately followed by an action of the bowels. This condition is not as a rule continuous, but it occurs in bouts which yield to treatment. As regards the dietetic treatment of these various forms of nervous diarrhoea, it may be said that in one form the patient is the best judge, and that in the others nothing can be done except the establishment of a healthy diet, regular hours, and an increase of confidence.