Note 1 — Chapter III · THE CHEMICAL ASPECT.

Explanation.—The Roman numerals placed opposite the above list of elementary substances present the difference or equivalent or saturating power of each element. Hydrogen, for example, is a monad, a simple particle, or atom, or unit. Oxygen is a dyad, represented by II, two. It requires two atoms of hydrogen to saturate one of oxygen, or its equivalent, to form water. A triad, III, requires three monads; a tetrad, IV, four; a pentad, V, five; a sexad, VI, six units or monads, their respective equivalents or saturating power. A monad or monogenic element replaces another one by one. An atom of a polygenic element, that is, a dyad, etc., on the other hand, always takes the place of, or is equivalent to, two or more atoms of a monogenic element. ↑