Before leaving this branch of the subject it may be well to warn the student against the confusion of thought into which some have fallen through failing to distinguish this elemental essence which we have been considering from the monadic essence manifesting through the mineral kingdom. It must be borne in mind that monadic essence at one stage of its evolution towards humanity manifests through the elemental kingdom, while at a later stage it manifests through the mineral kingdom: but the fact that two bodies of monadic essence at these different stages are in manifestation at the same moment, and that one of these manifestations (the earth elemental) occupies the same space as and inhabits the other (say a rock), in no way interferes with the evolution either of one or the other, nor does it imply any relation between the bodies of monadic essence lying within both. The rock will also be permeated by its appropriate variety of the omnipresent Jiva or life principle, but that of course is again totally distinct from either of the essences above mentioned. 2. _The Kamarupas of Animals._ This is an extremely large class, yet it does not occupy a particularly important position on the astral plane, since its members usually stay there but a very short time. The vast majority of animals have not as yet acquired permanent individualization, and when one of them dies the monadic essence which has been manifesting through it flows back again into the particular stratum whence it came, bearing with it such advancement or experience as has been attained during that life. It is not, however, able to do this quite immediately; the kamic aura of the animal forms itself into a Kamarupa, just as in man's case, and the animal has a real existence on the astral plane, the length of which, though never great, varies according to the intelligence which it has developed. In most cases it does not seem to be more than dreamily conscious, but appears perfectly happy. The comparatively few domestic animals who have already attained individuality, and will therefore be reborn no more as animals in this world, have a much longer and much more vivid life in Kamaloka than their less advanced fellows, and at the end of it sink gradually into a subjective condition, which is likely to last for a very considerable period. One interesting subdivision of this class consists of the Kamarupas of those anthropoid apes mentioned in _The Secret Doctrine_ (vol. i, p. 184) who are already individualized, and will be ready to take human incarnation in the next round, or perhaps some of them even sooner. 3. _Nature-Spirits of all Kinds._