The physical atoms must coincide in vibration with their etheric
envelopes, and the "note" is "heat." Step into the shade, where
the ocean of ether is vibrating more slowly, and the ether of the
body reduces its vibration. "The ether is the origin of all
force and of all phenomena."

This etheric matter follows identical laws with prakritic matter,
or, accurately, the laws of our matter flow from the etheric
matter from which it is made. The ether has two hundred or more
elementary substances, each atom of our eighty or ninety
"elements" being the chemical union of great masses of two or
more of the etheric elements or their combinations. These
etheric elementary substances combine and unite; our elementary
substances simply following in their combinations the law which
they inherit from their parents. They take form and shape. They
vibrate through one octave, and take solid liquid or gaseous form
in ether, as their types here in our world take it in prakriti,
as their vibrations are increased or diminished. In short, the
ether is the prototype of our physical or prakritic world, out of
which it is made and a product of which it is.

As this ether is "physical" matter, the same as prakriti, one
harmonic law covering both, and as this ether fills all space,
Modern Science divides physical matter into two kinds, which, for
convenience in differentiation, are here called prakritic and
etheric.

Matter is something--science does not know or care to know what
--in vibration. A very low octave of vibration produces
prakriti; a very high octave of vibration produces ether. The