When the use of inorganic minerals is discontinued and when the proper methods of eliminative treatment, dietetic and otherwise, are applied, these mineral substances are gradually dislodged and carried out of the system. Simultaneously with their elimination disappear their signs in the iris and the disease symptoms which their presence had created in the organism. In this connection it is a significant fact that those minerals which are congenial to the system, that is, those which in their organic form enter into the composition of the body, are much more easily eliminated if they have been taken in the inorganic form, than those substances which are naturally foreign and poisonous to the human organism, such as mercury, arsenic, iodine, the bromides, the different coal-tar preparations, etc. This is proved by the fact that the signs of the minerals which are normal constituents of the human body disappear from the iris of the eye much more quickly than the signs of those minerals which are foreign and naturally poisonous to the system. The difficulty we experience in eliminating mineral poisons from the body would seem to indicate that Nature never intended them to be used as foods or medicines. The intestines, kidneys, skin, mucous membranes and other organs of depuration are evidently not constructed or prepared to cope with inorganic, poisonous substances and to eliminate them completely. Accordingly, these poisons show the tendency to accumulate in certain parts or organs of the body for which they have a special affinity and then to act as irritants and destructive corrodents. The diseases which we find most difficult to cure, even by the most radical application of natural methods, are cases of drug-poisoning. Substances which are foreign to the human organism, and especially the inorganic, mineral poisons, positively destroy tissues and organs, and are much harder to eliminate from the system than the encumbrances of morbid materials and waste matter produced in the body by wrong habits of living only. The obvious reason for this is that our organs of elimination are intended and constructed to excrete only such waste products as are formed in the organism in the processes of metabolism. Tuberculosis or cancer may be caused in a scrofulous or psoriatic constitution by overloading the system with meat, coffee, alcohol or tobacco; but as soon as these bad habits are discontinued, and the organs of elimination stimulated by natural methods, the encumbrances will be eliminated, and the much-dreaded symptoms will subside and disappear, often with surprising rapidity.