And in many cases of breakdown the question of exhaustion plays no part. For most neurasthenics show no loss of energy; in fact, many of them exhibit an increased output. The crux of the whole matter is not exhaustion, but a loss of control over the nervous forces. This loss may show itself in two distinct ways. It may either prevent the energy from manifesting itself, or it may discharge it in a spasmodic manner. One market-day, in a country town, there were two horses, both of which, so far as their utility was concerned, were equally inefficient. Yet neither were lacking in energy. The one was excitable, plunging about to the danger of the public, and in any direction except the right one. The other was, on the contrary, perfectly quiet, standing harnessed to a vehicle, but unable to move it. This animal had strength and nerve force in plenty, yet it was incapable of making use of it. For a drunken ostler had harnessed it the wrong way round, with its head towards the cart. The same types can often be recognised in those who suffer from nervous breakdown. Some patients become fidgety and restless, rushing about from pillar to post, worrying their employees or their fellow-workers, and fussing around in the home until the rest of the household dreads the sight of them. Others are precisely the opposite of this. They become moody and taciturn, or disinclined to meet their friends or take part in a conversation. A woman will sit by herself most of the time, not caring even to have her children about her. A man will have a difficulty in making up his mind not only on important points of business, but it may be on the most trivial matters. He begins to look at his work as stupidly as the aforesaid horse stared helplessly at the cart he was supposed to pull. Where does the fault lie? Not in too much energy or too little, but in some derangement of the system, whereby the patient’s faculties either go astray or are rendered inert. And in order to discover the real source of the mischief, it is necessary to look, not at the climax, but farther back, through a long sequence of events which have been leading up to it. CHAPTER II. THE DANGER SIGNAL. It will naturally be asked by what sign is a man or woman to know when they are threatened with a breakdown. By no one sign in particular. One cloud does not make a wet day. It is only when other clouds begin to gather and we feel a certain change in the atmosphere that we surmise that rain is coming. The signs which warn us of the approach of a storm are almost too indefinite for words. [Sidenote: Signs of a breakdown.]