Lumen de Lumine

This is the sense of our learned Adeptus, and for his Analogie of the Philosophic Salt, and a pumice-stone, it cannot be well conceiv’d without the Light of Experience. It is then a porous, hollow, froth-like, spongious Salt. The Consistency of it is pumice-like, but neither hard, nor opacous. It is a thin, slippery, oily substance in appearance like Mouth-glew, but much more clear. Sometimes it looks like Rosials and Rubies: Sometimes it is violet Blew, sometimes white as Lilies, and againe more green than Grasse, but with a Smaragdine transparencie: and sometimes it looks like burnisht Gold and Silver. The River of Pearle hath her Name from it, for there it stands like the Sperm of Frogs in common waters. Sometimes it will move, and swim to the face of his Bath in thin leaves like wafers, but with a thousand miraculous Colours. This is enough and too much, for I hold it not my Duty to insist upon secrets, which are so far from the Readers Inquiry, that I dare say they are beyond his Expectation.