ALCHEMISTS.—From _Al_ and _Chemi_, fire, or the god and patriarch, _Kham_, also, the name of Egypt. The Rosicrucians of the middle ages, such as Robertus de Fluctibus (Robert Fludd), Paracelsus, Thomas Vaughan (Eugenius Philalethes), Van Helmont, and others, were all alchemists, who sought for the _hidden spirit_ in every inorganic matter. Some people—nay, the great majority—have accused alchemists of charlatanry and false pretending. Surely such men as Roger Bacon, Agrippa, Henry Kunrath, and the Arabian Geber (the first to introduce into Europe some of the secrets of chemistry), can hardly be treated as impostors—least of all as fools. Scientists who are reforming the science of physics upon the basis of the atomic theory of Demokritus, as restated by John Dalton, conveniently forget that Demokritus, of Abdera, was an alchemist, and that the mind that was capable of penetrating so far into the secret operations of nature in one direction must have had good reasons to study and become a Hermetic philosopher. Olaus Borrichias says, that the cradle of alchemy is to be sought in the most distant times. ASTRAL LIGHT.—The same as the _sidereal light_ of Paracelsus and other Hermetic philosophers. Physically, it is the ether of modern science. Metaphysically, and in its spiritual, or occult sense, ether is a great deal more than is often imagined. In occult physics, and alchemy, it is well demonstrated to enclose within its shoreless waves not only Mr. Tyndall’s “_promise_ and potency of every quality of life,” but also the _realization_ of the potency of every quality of spirit. Alchemists and Hermetists believe that their astral, or sidereal ether, besides the above properties of sulphur, and white and red magnesia, or _magnes_, is the _anima mundi_, the workshop of Nature and of all the cosmos, spiritually, as well as physically. The “grand magisterium” asserts itself in the phenomenon of mesmerism, in the “levitation” of human and inert objects; and may be called the ether from its spiritual aspect.