In several of our cases procedures such as these have been adopted. O. was not long in acquiring the faculty of writing with both hands, the left tracing mirror characters. The object of the exercise was to oblige him to maintain tranquillity and a correct position of his head and neck, while his hands were simultaneously employed. By this means, as well as by synchronous drawing exercises, he soon became so deft that he learned to conserve almost complete immobility during the performance, to his great satisfaction. No less creditable results were attained with L. and with young J. The method appears to us to be indicated above all in cases where the left arm is the seat of tic. Any one who can use a pen with his right hand is not long in acquiring the faculty of mirror writing with his left. In this way the simultaneous execution of a normal movement with right hand and left is facilitated, and the sound limb imposes regularity on the other. Whatever be the localisation of the tic or tics, this is the technique to adopt. It presents this advantage, that its combinations and permutations serve to stimulate the patient's interest, and he, at the same time, is required to keep a watchful eye on his involuntary actions; so is his will disciplined. REST IN BED In the majority of cases absolute rest in bed is not desirable, but a youthful patient should always be sent to bed early, and be allowed to lie long; twelve hours in bed is not excessive. This rule is one which must not permit of exceptions; whatever be the excuses invented by the parents, we should see that it is rigorously obeyed. Two or three hours' rest some time in the course of the day may be enjoined, provided the period be fixed and uninterrupted. To break in on frequent siestas with little promenades or with times of unrest is not productive of any good. If it is impossible to maintain discipline during the day, absolute rest in bed for a longer or a shorter period may be counselled; the sedative effect of this measure cannot be gainsaid, especially when, for no apparent reason, exacerbations develop, with increase of emotional, obsessional, or other psychical phenomena. ISOLATION Isolation is a rather severe proceeding, which, however, one must not hesitate to utilise in rebellious cases, or if the patient's mental state precludes the possibility of prolonged application of systematic discipline. Wyemann[235] cites a successful case, where a youth of seventeen, with a bad family history, suffered from convulsive movements in association with coprolalia, and was cured of the latter by isolation. Some would even recommend the removal of the patient to a hospital for mental disease. Such a step, however, is rather premature, for he may already have begun to improve where he happens to be, and it is not always certain that a sojourn of this character will be beneficial.