Emotions have long been studied in their effects on energy. In fact, every animal that bristles and snarls as it faces a foe is, unconsciously, attempting to paralyze with fear its opponent, to render it helpless through the inhibition of action. So with the lurking tiger; it waits in silence for the prey and seeks the fascination of surprise as a factor in victory. On the other hand, the emotion of fear may be a releaser of energy for the prospective victim; it may release the energies of flight and add to the power of the animal. In this, there is a unique and neglected phase of emotion, i.e., if you shake your fist at your enemy and he runs away or knocks you down, then your manifestation of anger has been unsuccessful for you but his reaction has been successful for him. If he becomes so paralyzed with fear that you can work your will with him, then your anger is successful while his fear is not. Most of the psychologists have neglected this phase of emotion. Thus it is hard to understand the use fainting from terror has to the victim. The answer is it is useful to him who has caused the victim to faint. 6. For the individual, the emotion of fear has as its function a preparation for a danger that is foreseen to be too powerful to be met with effective resistance. Fear says, "It's no use to fight, fly or hide." Therefore, normally there is a heightening of energy feeling and action in these two directions. There are plenty of recorded incidents where fear has enabled men to run distances utterly impossible to them otherwise. In the fear states of mental disease, the resistance a frail woman will offer to her attendants is such that the utmost strength of several people is required to restrain her. Under these circumstances fear acts as an energizer, causing physical reactions not ordinarily within the will of the person. "Fear lends wings," is the time-honored way of expressing this. The trapped animal makes "frantic" efforts to escape. Fear is extraordinarily contagious, perhaps because as herd members the cry of fear sets us all racing for safety. This is the grimmest danger from fires in public places or the presence of a coward in a military unit. Panic occurs with its blind unreasoning flight, and the result is disastrous. I emphasize again that emotions are poorly adapted to the welfare of the individual. Business panics are in large measure the result of the contagiousness of fear; timidity spreads like wildfire, distrust and suspicion are aroused and stagnation results without a "real" basis. In President Wilson's phrase, the panic is "purely psychological."