From this it seems obvious to argue that if we contrive an artificial mechanical means of exercising these muscles for, let us say, one, two, or three hours a day, they will resume their natural functions, and so—— The lacuna cannot be satisfactorily filled. If we carry on the argument to its logical conclusion the fallacy is made evident. For the method arising from this argument creates civil war within the body. There is no co-ordination, and the outcome must be strife. This point will be at once made clear by an instance which must be taken to represent a broadly typical case, an allegory rather than a special example of particular application. Let us take for example the case of John Doe, whose work keeps him indoors from 9 a. m. to 6 p. m., and makes a very urgent call upon his mental and nervous powers. By the time he is thirty-five, possibly five or ten years earlier, John Doe is suffering from anæmia, indigestion, nervous debility, lassitude, insomnia, heart weakness, and heaven only knows what other troubles. His bodily functions are irregular, his muscular system partly atrophied and unresponsive, his nerves irritated, and his general condition—there is really no better word—“jumpy.” Incidentally I must add that his mind is inoperative in many directions. He has a bad mental attitude towards the physical acts of everyday life. For him his body is a mechanism, the intricate workings of which he never pauses to examine, but which he drives or forces through a certain series of evolutions similar in kind to those it has always performed within his experience. When this mechanism fails, it has to be forced on again by tonics and stimulants or given a “rest,” which is followed by a return to the old methods of propulsion.