point where it occurs is affected by the lack of any of its elements.

One of the greatest physiological chemists, Justus von Liebig, maintains
that, if one of the necessary elements in a chemical composition is
missing, the rest cannot fulfill their duties and the respective cells
must become diseased and degenerate.

This discovery, known as "the law of the minimum," has thrown additional
light upon the tasks before the new school of medicine.

Upon the basis of a careful diagnosis, the necessary nutritive salts or
cell-foods, carefully compounded in accordance with the law of
chemotaxis must be administered. This law discovered by _Engelmann_,
requires that these cell-foods must be administered in digestible and
assimilable forms so that the cells will be attracted by the chemical
reaction, which may be of a positive or a negative character.

This being so, we can easily build up the tissues, by studying their
chemical composition and supplying to the system that which is
necessary, in the form of food. The cell will take care of the rest.
Each tissue has its specific cell-system, and each cell will be
attracted only by those ingredients which are needed for the mother
tissue.

_To bring to a tissue through the blood the lacking constituent element
or elements is the only means of regenerating and healing diseased
cells._

In this connection we are considering only constitutional diseases.