Archeus
In alchemy, Archeus, or archaeus, is a term used generally to refer to the lowest and most dense aspect of the astral plane which presides over the growth and continuation of all living beings. The term was used by medieval Paracelsus and those after him, such as Jan Baptist van Helmont.To define it, the philosophers maintained that the Archeus was the segment of the closest quadrant of the higher worlds which blends with some similarity to the highest vibrations of our physical world. Essentially it was seen as the gray area wherein matter, speaking parallel and not laterally, begins to transmute into spiritual energies. In effect, it is the glue which binds the heavens to the material, and so allows the maxim as above, so below. Apart from the Archeus, which is primarily a Platonic name for the subject, this sphere is also called the Anima Mundi, Soul of the World, Spirit of the World, The Transitive LVX, The Path of Saturn (connecting Malkuth and Yesod in the system of Jewish mysticism called the Kabbalah), the Earth Sphere and the Zone Girdling the Earth.