181. In the purely mechanical medium, the move- ment of the hand is independent of the will; in the intuitive medium, the movement is voluntary and optional.
The semi-mechanical medium partakes of both natures ; he feels an impulse given to his hand in spite of himself, but, at the same time, has a consciousness of the words as rapidly as they are formed. With the first, the thought follows the act of writing ; with the second, it precedes it; with the third, it accompanies it. These last mediums are the most numerous.