it 78 THE PRINCIPLE OF THE DIRECT CHAP. HI. Most of these symptoms are probably the direct result, independently of habit, of the disturbed state of the sensorium; but it is doubtful whether they ought to be wholly thus accounted for. When an animal is alarmed • it almost always stands motionless for a moment, in order to collect its senses and to ascertain the source of danger, and sometimes for the sake of escaping de- tection. But headlong flight soon follows, with no hus- banding of the strength as in fighting, and the animal continues to fly as long as the danger lasts., until utter prostration, with failing respiration and circulation,, with all the muscles quivering and profuse sweating., renders further flight impossible. Hence it does not seem im- probable that the principle of associated habit may in part account for, or at least augment, some of the above- named characteristic symptoms of extreme terror. That the principle of associated habit has played an important part in causing the movements expressive of the foregoing several strong emotions and sensations, we may, I think, conclude from considering firstly, some other strong emotions which do not ordinarily require for their relief or gratification any voluntary move- ment; and secondly the contrast in nature between the so-called exciting and depressing states of the mind. Ko emotion is stronger than maternal love; but a mother may feel the deepest- love for her helpless infant, and yet not show it by any outward sign; or only by slight caressing movements, with a gentle smile and tender eyes. But let any one intentionally injure her infant, and see what a change! how she starts up with threatening aspect, how her eyes sparkle and her face reddens, how her "bosom heaves, nostrils dilate, and heart beats; for anger, and not maternal love, has ha- bitually led to action. The love between the opposite