Two years later this woman came to me in a state of collapse, the results of the after effects of a bad attack of pleurisy. She proved an admirable patient, and is now in perfect health. She was a magnificent instance of a case in which the power was there, finely developed, but not the knowledge which would enable her to make full use of that power. Footnote 12: In this connection the following verses (24, 25, 26) from the Gospel according to St. Luke, Chapter XI, are interesting: 24. When the unclean spirit has gone out of a man, he walketh through dry places, seeking rest: and finding none, he saith, I will return unto my house whence I came out. 25. And when he cometh, he findeth it swept and garnished. 26. Then goeth he, and taketh _to him_ seven other spirits more wicked than himself; and they enter in, and dwell there: and the last state of that man is worse than the first. Footnote 13: Certain aspects of these principles will be found set out in detail in Part II of this volume. Footnote 14: A simple, practical example of what is meant by obtaining the position of mechanical advantage may be given. Let the subject sit as far back in a chair as possible. The teacher, having decided upon the orders necessary for the elongation of the spine, the freedom of the neck (i.e., requisite natural laxness), and other conditions desirable for the particular case in hand, will then ask the pupil to rehearse those orders mentally, at the same time that he himself renders assistance by the skilful use of his hands. Then holding with one hand one or two books against the inner back of the chair, he will rely upon the pupil mentally rehearsing the orders necessary to maintain and improve the conditions present, while he, with the other hand placed upon the pupil’s shoulder, causes the body gradually to incline backwards until its weight is taken by the back of the chair. The shoulder-blades will, of course, be resting against the books. The position thus secured is one of a number which I employ and which for want of a better name I refer to as a position of “mechanical advantage.” Footnote 15: A very notable though trivial instance of mental “rigidity” was brought to me by a pupil while writing these pages. A fireman on duty at a theatre had neglected to unbolt the escape doors. When severely reprimanded he pleaded that he had been instructed by an assistant manager to do duty in another part of the theatre at the time he usually opened the escapes. The following night the assistant manager instructed him to make the same change in his routine on which the man pleaded, “Don’t ask me to do that, sir. I forgot the escapes last night and I am sure to forget ’em again if you make me go that way round. You see, sir, I’ve gone round the other way so long that if I make a change I seem to lose my memory.” Footnote 16: