"Our ordinary text-books on physiology give but little idea of what I may call the intelligence that presides over the various systems of the body, showing itself in the bones, as we have seen, in distributing the available but insufficient amount of lime salts in disease; not equally, but for the protection of the most vital parts, leaving those of lesser value disproportionally deficient. In the muscular system nearly all contractions are involuntary. Even in the voluntary (so-called) muscles, the most we can do is to will results. We do not will the contractions that carry out these results. Muscles, striped and unstriped, are ceaselessly acting without the slightest consciousness in maintaining the balance of the body, the expression of the face, the general attributes corresponding to mental states, the carrying on of digestion and other processes with a purposiveness, and adaptation of means to new ends and new conditions, ceaselessly arising, that are beyond all material mechanism. Consider, for instance, the marvelous increase of smooth muscle in the uterus at term, and also its no less marvelous subsequent involution; observe, too, the compensating muscular increase of a damaged heart until the balance is restored and the necessity for it ceases, as does growth at a fixed period; consider in detail the repair of a broken bone. These actions are not mere properties of matter; they demand, and are the result of, a controlling mind. "The circulation does not go round as most text-books would lead us to believe, as the result merely of the action of a system of elastic tubes, connected with a self-acting force-pump. It is such views as these that degrade physiology and obscure the marvels of the body. The circulation never flows for two minutes in the same manner. In an instant, miles of capillaries are closed or opened up, according to the ever-varying body needs, of which, consciously, we are entirely unaware. The blood supply of each organ is not mechanical, but is carefully regulated from minute to minute in health, exactly according to its needs and activities, and when this ever fails, we at once recognize it as disease, and call it congestion and so forth. The very heart-beat itself is never constant, but varies _pro rata_ with the amount of exercise, activity of vital functions, of conditions of temperature, etc., and even of emotions and other direct mental feelings. The whole reproductive system is obviously under the sway and guidance of more than blind material forces. In short, when thoroughly analyzed, the action and regulation of no system of the body can be satisfactorily explained, without postulating an unconscious mental element, which _does_, if allowed, satisfactorily explain all the phenomena." CHAPTER II THE SYMPATHETIC SYSTEM