To recapitulate: A good time to take your internal bath is about half an hour after each meal. Cultivate regularity in this, and Nature will second your efforts and establish a periodicity for you by her suggestive impulse and call. Our internal economy should not be slighted as it has been. The intestines are good, faithful, patient servitors, ready to perform their lowly office even when we are inattentive and heedless. Sometimes, however, they become rebellious, after they have stood more abuse than one would think them capable of standing. Let us reform our bad habits; our servitors are willing to enter with us into better habits, and co-operate with us in a truly human life. Can you not spare a few minutes, three times a day, at _regular periods_, for inner purification? You will find it very easy when once you make it a matter of routine. Now note this point: The work of your brain depends on the power sent to it by the gastro-intestinal canal. A motor car goes no faster than the power furnished enables it to go. So your brain activity is ever on a par with the energy supplied from this usually despised intestinal source; that is, it can never rise higher than the supply of this energy warrants, and it always falls to the level of this supply, for it depends on it absolutely for sustaining power. It would seem, therefore, that common sense would be sufficient to shame us into keeping clean, scrupulously clean, the canal that supplies us with working force--the canal that extends without a break from mouth to anus. Yet my experience shows that almost everybody cares more for his outsides than for his insides--more for squandering his stored energy than for looking out for its constant renewal--and that most patients are foul all the way down. Well-fed animals that have the range of Nature are plump, and have healthy hair, skin, teeth, etc., because their intestinal organs perform their functions frequently and fully. When animals become domesticated and “civilized,” they become constipated and catch various human illnesses or grow a crop of their own. Well-fed “humanals” grow thin and puny, or bloated with gas, looking like corpulent clay men, without natural teeth, without natural hair, their skin dry and of a sickly hue, bloodless, fading away because of an early blight before they have completed their early growth. Heredity is blamed for the bloodless, nerveless, brainless body, when, as a matter of fact, its degeneration is due to foulness within.