I will, here, only note one more point in concluding my reference to the hypothetical John Doe, who, nevertheless, stands as the representative of a very large body of people. This point is the question of the storing and reserving of energy, and, to use a phrase which has a mechanical equivalent, the registration of tension. If you ask a man to lift a _papier-mâché_ imitation of an enormous dumb-bell, leading him to believe that it is almost beyond his capacity to raise it from the floor, he will exert his full power in the effort to do that which he could perform with the greatest ease. In a lesser degree the same expenditure of unnecessary force is exerted by the vast majority of “physical culture” students, and by practically every person in the ordinary duties of daily life. The kinæsthetic system has not been taught to register correctly the tension or, in other words, to gauge accurately the amount of muscular effort required to perform certain acts, the expenditure of effort always being in excess of what is required, an excellent instance of the lack of harmony in the untutored organism. This fact may be easily tested by any interested person who will take the trouble to try its application. Ask a friend to lift a chair or any other object of such weight that, while it may be lifted without great difficulty, will in the process make an undoubted call on the muscular energies. You will see at once that your friend will approach the task with a definite preconception as to the amount of physical tension necessary. His mind is exclusively occupied with the question of his own muscular effort, instead of with the purpose in front of him and the best means to undertake it. Before he has even approached it, he will brace or tense the muscles of his arms, back, neck, etc., and when about to perform the act he will place himself in a position which is actually one of mechanical disadvantage as far as he is concerned. Not only are all these preparations of course quite unnecessary, but the whole attitude of mind towards the task is wrong. In such instances as this, any preconception as to the degree of tension required is out of place. If we desire to lift a weight with the least possible waste of energy, we should approach it and grasp it with relaxed muscles, assuming the position of greatest possible mechanical advantage, and then gradually exert our muscular energies until sufficient power is attained to overcome the resistance.