On the other hand, we do not use any drugs or medicines which tend to hinder, check or suppress Nature's cleansing and regenerating processes. We never give anything in the least degree poisonous. We avoid all anodynes, hypnotics, sedatives, antipyretics, laxatives, cathartics, etc. Judicious fasting, cold-water applications and, if necessary, warm-water injections in case of constipation will do everything that is claimed for poisonous drugs. Inorganic Minerals and Mineral Poisons For many years past, physicians of the different schools of medicine, diet experts and food chemists have been divided on the question whether or not mineral substances which in the organic form enter into the composition of the human body may safely be used in foods and medicines in the inorganic form. The medical profession holds almost unanimously that this is permissible and good practice, so that nearly every allopathic medical prescription contains some such inorganic substance, or worse than that, one or more virulent mineral poisons, as mercury, arsenic, phosphorus, etc. So far, the discussion about the usefulness or harmfulness of inorganic minerals as foods and medicines was largely theoretical and controversial. Neither party had positive proofs for its contentions. But Nature's records in the iris of the eye settle the question for good and for ever. One of the fundamental principles of the science of Diagnosis from the Eye is that "nothing shows in the iris by abnormal signs or discolorations except that which is abnormal in the body or injurious to it." When substances which are uncongenial or poisonous to the system accumulate in any part or organ of the body in sufficient quantities, they will indicate their presence by certain signs and abnormal colors in the corresponding areas of the iris. In this way Nature makes known by her records in the eye what substances are injurious to the body, and which are harmless. Certain mineral elements, such as iron, sodium, potassium, calcium, magnesium, phosphorus, sulphur, etc., which are among the important constituents of the human body, may be taken in the organic form in fruits and vegetables, or in herb extracts and the vitochemical remedies, in large amounts, in fact, far beyond the actual needs of the body, but they will not show in the iris of the eye, because they are easily eliminated from the system. If, however, the same minerals be taken in the inorganic form in considerable quantities, the iris will exhibit certain well-defined signs and discolorations in the areas corresponding to those parts of the body in which the mineral substances have accumulated. Obviously, Nature does not intend that these mineral elements should enter the organism in the inorganic form, and therefore the organs of depuration are not able to neutralize and eliminate them.