The power to mesmerize by this method is within the reach of any one with sufficient intelligence to understand the directions, and sufficient mental balance to follow them with persistency; provided always the subject is willing to be mesmerized, and is possessed of the requisite mental equilibrium to enable him to become passive and receptive. All mesmerists and all hypnotists agree in holding that self-confidence is a necessary part of the mental equipment of the successful operator. This is true. It is also true that the possession of the requisite confidence is the one thing which distinguishes the successful from the unsuccessful operator. The foregoing remarks show how that confidence can be commanded, in spite of objective unbelief. Much has been said by mesmerists about the exertion of "will power;" but no one has ever explained just how that power is to be exerted, or in what it consists. Most people seem to imagine that it is exercised by compressing the lips, corrugating the brows, and assuming a fierce, determined, not to say piratical, aspect. It is perhaps needless to remark that the attitude of mind indicated by such an aspect is the farthest possible from that which is required for the successful exercise of so-called will power. It requires no mental or nervous strain to exert that power. On the contrary, a calm serenity of mind is indispensable. When that is acquired, the only other requisites are confidence and an earnest desire to bring about the results sought. That these three requisites can easily be acquired by any one of common intelligence has already been shown. From what has been said it seems evident that the force developed by mesmeric manipulations has its origin in mental action. That that is the motive power is certain. Whether this mental action creates or develops a fluid akin to magnetism, is a question which may never be solved. Nor is it deemed important that it should be; and it may be as well to class it at once among the many things unknowable, as to waste valuable time in a vain effort to wrest the secret from Nature. Electricity is known as a great force in physical nature; and it is harnessed and made to perform many services to mankind. Like all the great forces of nature, it is invisible, except through its effects, and it defies analysis. It will never be known to man except as one of the great correlated forces. It is equally impossible to know just what the force is which emanates from the mesmerist and controls his subject. We know that it exists, and that it can be utilized, and that is all. Whether it is a fluid or not is as impossible to know with certainty as it is to know what electricity is made of, if we should determine it to be a substance.