(7) Now to speak in a creaturely way, Sulphur, Mercurius, and Sal, are understood to be thus. S U L is the Soul or the Spirit that is risen up, or in a Similitude [it is] God: P H U R is the Prima Materia, or first Matter out of which the Spirit is generated, but especially the i Harshness: Mercurius has a fourfold Form in it, viz. Harshness, Bitterness, Fire, and Water: Sal is the Child that is generated from these four, and is harsh, eager, and a Cause of the Comprehensibility.

(44) In alchemy there are three symbolic substances: mercury, sulphur, and salt. To these was added a fourth mysterious life principle called Azoth. Concerning the first three, Herr von Welling has written: "There are three basic chemical substances which are called by the philosophers salt, sulphur, and mercury, but which are not to be confounded in any way with the crude salt, sulphur, and mercury taken from the earth or secured from the apothecary. Salt, sulphur, and mercury each has a triune nature, for each of these substances contains, in reality, also the other two substances, according to the secret arcanum of the wise. The body of salt is, therefore, threefold, namely salt, sulphur, and mercury; but in the body of salt one of the three (salt) predominates. Mercury is likewise composed of salt, sulphur, and mercury with the latter element predominating. Sulphur, similarly, is actually salt, sulphur, and mercury, with sulphur predominating. These nine divisions--3 times 3, plus Azoth (the mysterious universal life force), equals 10, the sacred decad of Pythagoras. Concerning the nature of Azoth there is much controversy. Some view it as the invisible, eternal fire; others as electricity; still others as magnetism. Transcendentalism refer to it as the astral light.