The plan, alike of each scheme as a whole and of the successive incarnation
of its chain of globes, is to dip step by step more deeply into matter, and
then to rise step by step out of it again.

Each chain consists of seven globes, and both globes and chains observe the
rule of descending into matter and then rising out of it again. In order to
make this comprehensible let us take as an example the chain to which our
Earth belongs. At the present time it is in its fourth or most material
incarnation, and therefore three of its globes belong to the physical
world, two to the astral world, and two to the lower part of the mental
world. The wave of divine Life passes in succession from globe to globe of
this chain, beginning with one of the highest, descending gradually to the
lowest and then climbing again to the same level as that at which it began.

Let us for convenience of reference label the seven globes by the earlier
letters of the alphabet, and number the incarnations in order. Thus, as
this is the fourth incarnation of our chain, the first globe in this
incarnation will be 4A, the second 4B, the third 4C, the fourth (which is
our Earth) 4D, and so on.

These globes are not all composed of physical matter. 4A contains no matter
lower than that of the mental world; it has its counterpart in all the
worlds higher than that, but nothing below it. 4B exists in the astral
world; but 4C is a physical globe, visible to our telescopes, and is in
fact the planet which we know as Mars. Globe 4D is our own Earth, on which
the life-wave of the chain is at present in action. Globe 4E is the planet
which we call Mercury--also in the physical world. Globe 4F is in the
astral world, corresponding on the ascending arc to globe 4B in the
descent; while globe 4G corresponds to globe 4A in having its lowest
manifestation in the lower part of the mental world. Thus it will be seen