If you are interested to know why a certain plant does not flourish in the temperature and light to which it has been accustomed, you investigate the soil--the source of nourishment--and thus determine why the downy or velvety appearance has left the flower; why the leaves are yellow, dry or falling; why the stems are withering. Even the most ignorant person knows that the symptoms the plant presents did not bring about the unsuitableness of the soil; that, on the contrary, the condition of the soil is responsible for the plant's present state. Would it not be unwisdom, therefore, to treat directly the symptoms of decay, instead of treating the soil, or changing it? Just so misguided is the judgment of the physician who prescribes physic or tonics in the case of a person having a foul intestinal canal, a condition destructive of the absorbent and the excretory glands. But members of county medical societies do just such foolish things. Notwithstanding their prescriptions, a point will be reached by the patient where the restoration of his millions of small rootlets, or organic feeders, will be impossible, and like a decaying plant in unfavorable soil he gradually decays or withers, here and there, until finally he topples over before he knows it, probably long before maturity has been reached. It is not generally known among laymen, nor sufficiently appreciated among physicians, that the mass of fecal matter normally evacuated from the bowels comes mainly from the blood; and that this mass is not, as it is usually supposed to be, the residue of the food that has been left unassimilated. Embedded in the mucous membrane of the colon are tubular glands under the control of the nervous system. When these glands become unduly excited through local inflammation and irritation, the normal flow from them is increased to such an extent that a rapid waste of precious tissue occurs throughout the system, and the vital force--which had taken perhaps years to store--is depleted to the point of exhaustion, sometimes even in a few hours. Almost every one has had some experience of exhaustion following diarrhea.