account several stages of evolution which are unseen by the physical eye,
and gives to them the mediæval name of "elemental kingdoms".

The divine Life pours itself into matter from above, and its whole course
may be thought of in two stages--the gradual assumption of grosser and
grosser matter, and then the gradual casting off again of the vehicles
which have been assumed. The earliest level upon which its vehicles can be
scientifically observed is the mental--the fifth counting from the finer to
the grosser, the first on which there are separated globes. In practical
study it is found convenient to divide this mental world into two parts,
which we call the higher and the lower according to the degree of density
of their matter. The higher consists of the three finer subdivisions of
mental matter; the lower part of the other four.

When the outpouring reaches the higher mental world it draws together the
ethereal elements there, combines them into what at that level correspond
to substances and of these substances builds forms which it inhabits. We
call this the first elemental kingdom.

After a long period of evolution through different forms at that level, the
wave of life, which is all the time pressing steadily downwards, learns to
identify itself so fully with those forms that, instead of occupying them
and withdrawing from them periodically, it is able to hold them permanently
and make them part of itself, so that now from that level it can proceed to
the temporary occupation of forms at a still lower level. When it reaches
this stage we call it the second elemental kingdom, the ensouling life of
which resides upon the higher mental levels, while the vehicles through
which it manifests are on the lower.

After another vast period of similar length, it is found that the downward