"To say that all spirits are alike, or fitted to the same atmosphere, or possessed of like powers, or governed by the same attractions--electric, magnetic, odic, astral, it matters not which--is as absurd as though one should say that all planets have the same nature, or that all animals are amphibious, or all men can be nourished on the same food. It accords with reason to suppose that the grossest natures among the spirits will sink to the lowest depths of the spiritual atmosphere--in other words, be found nearest to the earth. Inversely, the purest would be farthest away. In what, were we to coin a word, we should call the Psychomatics of Occultism, it is as unwarrantable to assume that either of these grades of spirits can occupy the place, or subsist in the conditions, of the other, as in hydraulics it would be to expect that two liquids of different densities could exchange their markings on the scale of Beaume's hydrometer."
Chapter X
