While, then, disturbances of the function of writing are seldom ascertainable in those who tic, we have convinced ourselves on more than one occasion of the truth of the converse, that the exercise of the faculty is sometimes intimately combined with the evolution of tics of neck and shoulder. S. dated his mental torticollis from the time when he used to copy figures for several hours a day. As a matter of fact, he wrote an excellent hand, and experienced no difficulty in performing the necessary movements, but continued writing increased the rotation. N.'s torticollis was the sequel to long spells of office work, during which he never laid down his pen. In the case of L., the wryneck and the convulsions of the right arm were preceded by a sort of writers' cramp of the right hand, and subsequently of the left. In the accompanying instance, the development of which one of us has had the opportunity of observing, the appearance of the torticollis was at first confined to occasions of writing, but gradually it came into evidence with other arm actions, and eventually established itself in a permanent fashion. P., fifty years old, occupies a responsible position in a big railway company, is director in a large office, and performs his duties with peculiar conscientiousness and zeal. Naturally an emotional man, he was much distressed by an unusually sad family bereavement about the middle of 1900, which coincided with a period of great overwork. As he was obliged every day to arrange innumerable papers and affix his signature to them, he began to notice that each time he wrote his name his head turned to the right involuntarily, and he felt a sensation of discomfort in the neck and right shoulder. He tried to remedy the faulty position by holding his chin with his left hand; nevertheless, in the course of the next few months the movement began to assert itself not merely as he wrote his signature, but also when he cut his food at table, or sharpened a pencil, or trimmed his finger nails. _October 14, 1901._--Whenever P. proceeds to write, his head is immediately rotated to the right and maintained in that attitude by successive contractions. Simultaneously, the right side of the face is distorted by a grimace, the right eye blinks, and the right corner of the mouth is drawn down by a strong effort of the platysma. The state of affairs is unaltered so long as he is handling a pen, though, curiously enough, his caligraphy itself is flawless. The more firmly he grasps his pen, the more violent the spasms; the substitution of a pencil abates them somewhat, as does writing on the floor with a cane, while if he traces letters in the air in front of him with his finger, they do not occur at all. When both hands are occupied in writing, the head still turns to the right.