=Catatonia.=—In this form the general symptoms are similar to those of the simple type above described with the addition of the special symptoms referred to as catatonic excitement and catatonic stupor. The excitement period is manifested by an unrest and monotonous activity, stereotyped actions and speech, the patient constantly repeating some act, such as moving the hand, foot or head over and over again in the same way, or repeating the same word or phrase indefinitely. This occurs apparently involuntarily, the actions being automatic in character. The patient who has been in a semistuporous state may pick up a glass or chair and without show of emotion break it against the wall. In catatonic stupor the patient may show in the lighter degrees a simple loss of interest and feeling with sluggish reaction to stimuli, or a profound inactivity and stupor in which state he cannot apparently be reached by any stimuli; nevertheless, he apparently retains consciousness. In this type we observe the interesting symptom of negativism in which the patient always does the opposite of what he is requested, or refuses outright to obey any command. There may be a refusal of food so that the patient has to be fed by a tube, mutism may be present, the patient may go for weeks or months without saying a word; stereotype of attitude results in cataleptic poses and rigidity, in which the patient may maintain any particular pose for a prolonged period of time, and if placed in some other attitude may similarly retain the new attitude for a long time. This constitutes the so-called wax like rigidity, the patient reminding one of a wax figure. Pathologic suggestibility occurs in which the patient imitates movements, or repeats words and phrases that are spoken or performed before him.