At the autopsy the characteristic appearances of tuberculous meningitis were found: the base of the brain at the anterior perforated spot and origin of the sylvian artery was covered with gelatinous purulent patches, the colour of prune juice, which extended backwards to the pons; one in particular had enveloped the basilar trunk and sent out a prolongation on the right side, which surrounded the sixth, seventh, and eighth nerves at their point of emergence. For our part, we cannot apply the word tic to the convulsive phenomena of tuberculous meningitis. If localised spasms occurring in the course of a grave illness, associated with fever, headache, and delirium, with contractures and generalised convulsions, and if the spasmodic manifestations of rapidly fatal pyrexias, are all to be denominated tics, then the term has no longer any significance, and it would be wiser to give it at once its quietus. We are well enough aware that Cruchet believes there is a "convulsive tic symptom"; in other words, certain symptoms in such and such a disease appear in the guise of convulsive tic, "a movement or combination of movements representing in a clonic fashion a physiological act." Nevertheless, we are not convinced that the convulsive movements of Cruchet's patients exhibit the sequence of "regulated physiological acts." He further draws an analogy between the foregoing case and the partial convulsions of toxæmias, cerebral tumours, etc., "transient convulsions supervening in the course of acute or chronic affections, and readily recognisable." In exceptional circumstances they may "assume the form of convulsive tic." In strict truth the _form_ may be the same, but examination of the patient will soon demonstrate that the two are alike merely in appearance, and compel the reconsideration of an immature diagnosis. Our position is that tic is more than a symptom--it is a symptom-complex. Cruchet's definition of convulsive tic just quoted is by itself insufficient; the additional and indispensable factor is the characteristic mental defect, of which so illuminating an exposition was given by Charcot. * * * * * Finally, the knowledge derived from the pathological investigation of myoclonus and polyclonus does not of necessity throw light on the morbid anatomy of tic. In the case of an epileptic who suffered from myoclonus in his last years, ischæmic degenerations were found by Rossi and Gonzales disseminated throughout the brain, especially in the rolandic area, but any inference to hold good for the tics would be premature.