The Plane of Matter (A) comprises the forms of Matter in its form of
solids, liquids, and gases, as generally recognized by the text-books on
physics. The Plane of Matter (B) comprises certain higher and more
subtle forms of Matter of the existence of which modern science is but
now recognizing, the phenomena of Radiant Matter, in its phases of
radium, etc., belonging to the lower sub-division of this Minor Plane.
The Plane of Matter (C) comprises forms of the most subtle and tenuous
Matter, the existence of which is not suspected by ordinary scientists.
The Plane of Ethereal Substance comprises that which science speaks of
as "The Ether", a substance of extreme tenuity and elasticity, pervading
all Universal Space, and acting as a medium for the transmission of
waves of energy, such as light, heat, electricity, etc. This Ethereal
Substance forms a connecting link between Matter (so-called) and Energy,
and partakes of the nature of each. The Hermetic Teachings, however,
instruct that this plane has seven sub-divisions (as have all of the
Minor Planes), and that in fact there are seven ethers, instead of but
one.

Next above the Plane of Ethereal Substance comes the Plane of Energy
(A), which comprises the ordinary forms of Energy known to science, its
seven sub-planes being, respectively, Heat; Light; Magnetism;
Electricity, and Attraction (including Gravitation, Cohesion, Chemical
Affinity, etc.) and several other forms of energy indicated by
scientific experiments but not as yet named or classified. The Plane of
Energy (B) comprises seven subplanes of higher forms of energy not as
yet discovered by science, but which have been called "Nature's Finer
Forces" and which are called into operation in manifestations of certain
forms of mental phenomena, and by which such phenomena becomes possible.
The Plane of Energy (C) comprises seven sub-planes of energy so highly
organized that it bears many of the characteristics of "life," but which