The vibratory activity of the cell may be lowered through the decline of vitality brought about in a natural way by advancing age, or in an artificial way through wrong habits of living, wrong thinking and feeling, overwork, unnatural stimulation and excesses of various kinds. On the other hand, the inflow of vital force into the cells may be obstructed and their vibratory activity lowered by the accumulation of waste and morbid matter in the tissues, blood vessels and nerve channels of the body. Such clogging will interfere with the inflow of life force and with the free and harmonious vibration of the cells and organs of the body as surely as dust in a watch will interfere with the normal action and vibration of its wheels and balances. From this it is evident that negative conditions may be brought about not only by hyperrefinement of the physical organism, but also by clogging it with waste and morbid matter which interfere with the inflow and distribution of the vital force. It also becomes apparent that in such cases the Nature Cure methods of eliminative treatment, such as pure food diet, hydrotherapy, massage, chiropractic, osteopathy, etc., are valuable means of removing these obstructions and promoting the inflow and free circulation of the positive electric and magnetic life currents Abnormal Composition of Blood and Lymph As one of the primary causes of disease, we cited abnormal composition of blood and lymph. The human organism is made up of a certain number of elements in well-defined proportions. Chem-istry has discovered, so far, about seventeen of these elements in appreciable quantities and has ascertained their functions in the economy of the body. These seventeen elements must be present in the right proportions in order to insure normal texture, structure and functioning of the component parts and organs of the body. The cells and organs receive their nourishment from the blood and lymph currents. Therefore, these must contain all the elements needed by the organism in the right proportions, and this, of course, depends upon the character and the combination of the food supply. Every disease arising in the human organism from internal causes is accompanied by a deficiency in blood and tissues of certain important mineral elements [organic salts]. Undoubtedly, the majority of these diseases are caused by an unbalanced diet, or by food and drink poisoning. Wrong food combinations, on the one hand, create an overabundance of waste and morbid matter in the system and, on the other hand, fail to supply the positive mineral elements or organic salts on which depends the elimination of waste and systemic poisons from the body. The great problem of natural dietetics and of natural medical treatment is, therefore, how to restore and maintain the positivity of the blood and of the organism as a whole through providing in food, drink and medicine an abundant supply of the positive mineral salts in organic form.